Sleeping Bags

• Welded Box Wall Construction - The down filling is contained in welded box shaped baffle channels for maximum loft and to maintain an even distribution of down from head to toe, reducing heat loss through the seams
• 20D 380T Nylon Outer Shell Fabric - This fabric is durable and water resistant and protects the goose down from the elements, ensuring the sleeping bag performs at its best and is long-lasting
• Thermal Reverb - Aluminimised layer reflects heat back to the user to increase warmth
• Hydro Barrier Down - Premium 90/10 700 Fill Power Goose Down stays drier 4x longer than untreated down
• Ethically Sourced Down - RDS (Responsible Down Standard) certified down that has been humanely collected down from birds that have not been subject to any unnecessary harm
• Zip Protector and Plastic Snap System - Ensures easy and simple opening and closing of sleeping bag
• Insulated Adjustable Shoulder Baffle - Stops heat escaping from around the hood opening
• 3D Hood with Multi-Cord Closure - Precise fit with dual cord adjustment. Individual cord diameter allows easy differentiation in the dark
• Arrow Foot - Ergonomically designed foot area allowing feet to relax into their natural position
• 3D Insulated Zip Baffle - Minimises heat loss through the zip and the 3D shape allows the filling to loft and provide insulation
• Internal Pocket - For convenient storage of small items such as mobile phones
• Omega Shaping - Engineered for warmth. Omega shaped bags are ergonomically tailored around the head and shoulders. Zips and seams are placed in the lower section of the bag to retain warmth more effectively
• 4-Strap Compression Stuffsack - Minimises pack size for easy transportation
• Independently Tested - Gives you reassurance that the temperature ratings are accurate ISO 23537-1:2016
• Mesh Storage Sack - Allows down to loft whilst in storage, increasing the lifespan of sleeping bag
• Weight: 0.62kg
• Comfort: 2°
• Fill Type: 90/10 Goose Down
• Limit: -4°
• Extreme: -17°
• Suggested Usage Min: 2°, Suggested Usage Max: 20°
• Ext Chest Width: 80cm, Int Chest Width: 75cm
• Max User Height: 190cm, Int Length: 205cm
• Int Foot Width: 48cm
• Shape: Mummy
• Performance: 2 Season

• Welded Box Wall Construction - The down filling is contained in welded box shaped baffle channels for maximum loft and to maintain an even distribution of down from head to toe, reducing heat loss through the seams
• 20D 380T Nylon Outer Shell Fabric - This fabric is durable and water resistant and protects the goose down from the elements, ensuring the sleeping bag performs at its best and is long-lasting
• Thermal Reverb - Aluminimised layer reflects heat back to the user to increase warmth
• Hydro Barrier Down - Premium 90/10 700 Fill Power Goose Down stays drier 4x longer than untreated down
• Ethically Sourced Down - RDS (Responsible Down Standard) certified down that has been humanely collected down from birds that have not been subject to any unnecessary harm
• Full Length Two-Way Auto-Lock Zip with Zip Guard - Used to seal in warmth or provide ventilation and can be used from inside the bag. Anti-catch piping helps to prevent the zip from snagging on the lining
• Zip Protector and Plastic Snap System - Ensures easy and simple opening and closing of sleeping bag
• Insulated Adjustable Shoulder Baffle - Stops heat escaping from around the hood opening
• 3D Hood with Multi-Cord Closure - Precise fit with dual cord adjustment. Individual cord diameter allows easy differentiation in the dark
• Arrow Foot - Ergonomically designed foot area allowing feet to relax into their natural position
• 3D Insulated Zip Baffle - Minimises heat loss through the zip and the 3D shape allows the filling to loft and provide insulation
• Internal Pocket - For convenient storage of small items such as mobile phones
• Omega Shaping - Engineered for warmth. Omega shaped bags are ergonomically tailored around the head and shoulders. Zips and seams are placed in the lower section of the bag to retain warmth more effectively
• 4-Strap Compression Stuffsack - Minimises pack size for easy transportation
• Independently Tested - Gives you reassurance that the temperature ratings are accurate ISO 23537-1:2016
• Mesh Storage Sack - Allows down to loft whilst in storage, increasing the lifespan of sleeping bag
• Weight: 0.92kg
• Comfort: -1°C
• Fill Type: 90/10 Goose Down
• Suggested Usage Min: -8°C, Suggested Usage Max: 15°C
• Ext Chest Width: 80cm, Int Chest Width: 75cm
• Max User Height: 190cm
• Int Length: 205cm
• Int Foot Width: 48cm
• Shape: Mummy
• Performance: 3 Season

• Welded Box Wall Construction - The down filling is contained in welded box shaped baffle channels for maximum loft and to maintain an even distribution of down from head to toe, reducing heat loss through the seams.
• 20D 380T Nylon Outer Shell Fabric - This fabric is durable and water resistant and protects the goose down from the elements, ensuring the sleeping bag performs at its best and is long-lasting
• Thermal Reverb - Aluminimised layer reflects heat back to the user to increase warmth
• Hydro Barrier Down - Premium 90/10 700 Fill Power Goose Down stays drier 4x longer than untreated down
• Ethically Sourced Down - Humanely collected down from birds that have not been subject to any unnecessary harm
• Full Length Two-Way Auto-Lock Zip with Zip Guard - Used to seal in warmth or provide ventilation and can be used from inside the bag. Anti-catch piping helps to prevent the zip from snagging on the lining
• Zip Protector and Plastic Snap System - Ensures easy and simple opening and closing of sleeping bag
• Insulated Adjustable Shoulder Baffle - Stops heat escaping from around the hood opening
• 3D Hood with Multi-Cord Closure - Precise fit with dual cord adjustment. Individual cord diameter allows easy differentiation in the dark
• Arrow Foot - Ergonomically designed foot area allowing feet to relax into their natural position
• 3D Insulated Zip Baffle - Minimises heat loss through the zip and the 3D shape allows the filling to loft and provide insulation
• Internal Pocket - For convenient storage of small items such as mobile phones
• Omega Shaping - Engineered for warmth. Omega shaped bags are ergonomically tailored around the head and shoulders. Zips and seams are placed in the lower section of the bag to retain warmth more effectively
• 4-Strap Compression Stuff sack - Minimises pack size for easy transportation
• Independently Tested - Gives you reassurance that the temperature ratings are accurate ISO 23537-1:2016
• Mesh Storage Sack - Allows down to loft whilst in storage, increasing the lifespan of sleeping bag
• Total Weight: 1.1kg
• Comfort: -5°
• Fill Type: 90/10 Goose Down
• Limit: -12°
• Extreme: -30°
• Suggested Usage Min: -12°
• Suggested Usage Max: 15°
• Ext Chest Width: 80cm
• Int Chest Width: 75cm
• Max User Height: 190cm
• Int Foot Width: 48cm
• Int Length: 205cm
• Shape: Mummy
• Performance: 4 Season

• Grade A Quality Fill – Superior fibre fill which is designed to be durable, warm and lightweight, while retaining its loft and soft touch
• Independently Tested - Gives you reassurance that the temperature ratings are accurate ISO 23537-1:2016
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Integrated Headrest - Provides extra comfort and warmth for your head
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Single-Layer Stitch Construction - Reduces cold spots by ensuring the fill is evenly distributed within the bag
• Polair® Snug Lining - A super soft and cosy brushed Polair® polyester fabric that offers a warm handle. Ideal for snuggling into at night (190T)
• ThermoLock Pro Insulation - Increased durability, extra warmth and retains loft in damp conditions
• Zip Guard - Helps prevent the zip from snagging on the lining, allowing easy opening and closing
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Mummy Shaped Sleeping Bag - Tapers from the shoulders to the foot, reducing pack size and increasing thermal efficiency
• Shaped Hood with Elasticated Opening - Reduces heat loss from the head. No drawcord closure on Junior models for safety
• Woven Zip Puller - Allows you to quickly and easily move the zip
• Junior Size - Tailored for smaller bodies to keep them cosy during the night
• Horizontal Stitching - Evenly spaced to hold insulation in place and ensure even distribution throughout
• Stuffsack with Drawcord – Allows for easy packing, while minimising pack size for easy transportation
• Polair® Snug Shell- A super soft and cosy brushed Polair® polyester fabric that offers a warm handle. Ideal for snuggling into at night (190T)
• Total Weight: 1.1kg
• Packsize: 36.0 x ø21.0cm
• Fill Type: 60% Single Hole siliconised hollow fibre/40% polyester fill
• Suggested Usage Min: 8°
• Suggested Usage Max: 20°
• Ext Chest Width: 70cm
• Int Chest Width: 68cm
• Max User Height: 150cm
• Int Foot Width: 48cm
• Int Length: 155cm
• Shape: Junior
• Performance: 2 Season
• Zip Side: Left
• Tog: 9.0

• Grade A Quality Fill – Superior fibre fill which is designed to be durable, warm and lightweight, while retaining its loft and soft touch
• Independently Tested - Gives you reassurance that the temperature ratings are accurate ISO 23537-1:2016
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Integrated Headrest - Provides extra comfort and warmth for your head
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Single-Layer Stitch Construction - Reduces cold spots by ensuring the fill is evenly distributed within the bag
• Polair® Snug Lining - A super soft and cosy brushed Polair® polyester fabric that offers a warm handle. Ideal for snuggling into at night (190T)
• ThermoLock Pro Insulation - Increased durability, extra warmth and retains loft in damp conditions
• Zip Guard - Helps prevent the zip from snagging on the lining, allowing easy opening and closing
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Mummy Shaped Sleeping Bag - Tapers from the shoulders to the foot, reducing pack size and increasing thermal efficiency
• Shaped Hood with Elasticated Opening - Reduces heat loss from the head. No drawcord closure on Junior models for safety
• Woven Zip Puller - Allows you to quickly and easily move the zip
• Junior Size - Tailored for smaller bodies to keep them cosy during the night
• Horizontal Stitching - Evenly spaced to hold insulation in place and ensure even distribution throughout
• Stuffsack with Drawcord – Allows for easy packing, while minimising pack size for easy transportation
• Polair® Snug Shell- A super soft and cosy brushed Polair® polyester fabric that offers a warm handle. Ideal for snuggling into at night (190T)
• Total Weight: 1.1kg
• Packsize: 36.0 x ø21.0cm
• Fill Type: 60% Single Hole siliconised hollow fibre/40% polyester fill
• Suggested Usage Min: 8°
• Suggested Usage Max: 20°
• Ext Chest Width: 70cm
• Int Chest Width: 68cm
• Max User Height: 150cm
• Int Foot Width: 48cm
• Int Length: 155cm
• Shape: Junior
• Performance: 2 Season
• Zip Side: Left
• Tog: 9.0

• Polair® Hex Shell - A tough hexagonal ripstop polyester that is strong, highly breathable, and machine washable
• Polair® Lining - Super soft lining which is also hardwearing and easily washable, Polair® polyester
• Alpha Insulation - Lightweight and extra warm, Alpha has a great loft while compressing to a small pack size
• Off-Set Double Layer Construction - Off-set seams prevent cold spots at the stitching lines
• Square Shaped Bag - Also known as an envelope shape sleeping bag. Provides generous internal space for freedom of movement and comfort
• 3D hood with Drawcord Closure and Shaped Sides - Prevents heat loss from the head whilst the shaped sides provide additional comfort. The convenient drawcord closure provides flexible adjustment
• Horizontal Stitching - Evenly spaced to hold insulation in place and ensure even distribution throughout
• Insulated Adjustable Shoulder Baffle - Retains heat within the sleeping bag
• Zip Guard with Anti-Catch Piping - Helps to prevent the zip from snagging on the lining, allowing easy opening and closing
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Woven Zip Puller - Allows you to quickly and easily move the zip
• Internal Pocket - Provides convenient storage for small items
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Temperature Ratings Independently Measured - In accordance with EN 23537:2016. Extensively tested to meet accurate temperature rating standards for peace of mind
• Total Weight: 1.5kg
• Packsize: 25.0 x ø20.0cm
• Comfort: -2°
• Fill Type: Insulite Alpha
• Limit: -8°
• Extreme: -26°
• Suggested Usage Min: 4°
• Suggested Usage Max: 20°
• Ext Chest Width: 70cm
• Int Chest Width: 68cm
• Max User Height: 155cm
• Int Foot Width: 68cm
• Int Length: 165cm
• Shape: Junior
• Performance: 2-3 Season
• Zip Side: Left
• Tog: 10.0

• Polair® Hex Shell - A tough hexagonal ripstop polyester that is strong, highly breathable, and machine washable
• Polair® Lining - Super soft lining which is also hardwearing and easily washable, Polair® polyester
• Alpha Insulation - Lightweight and extra warm, Alpha has a great loft while compressing to a small pack size
• Mummy Shaped Sleeping Bag - Tapers from the shoulders to the foot, reducing pack size and increasing thermal efficiency
• Off-Set Double Layer Construction - Off-set seams prevent cold spots at the stitching lines
• Horizontal Stitching - Evenly spaced to hold insulation in place and ensure even distribution throughout
• 3D hood with Drawcord Closure and Shaped Sides - Prevents heat loss from the head whilst the shaped sides provide additional comfort. The convenient drawcord closure provides flexible adjustment
• Insulated Adjustable Shoulder Baffle - Retains heat within the sleeping bag
• Zip Guard with Anti-Catch Piping - Helps to prevent the zip from snagging on the lining, allowing easy opening and closing
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Woven Zip Puller - Allows you to quickly and easily move the zip
• Internal Pocket - Provides convenient storage for small items
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Temperature Ratings Independently Measured - In accordance with EN 23537:2016. Extensively tested to meet accurate temperature rating standards for peace of mind
• Total Weight: 1.65kg
• Packsize: 29.0 x 20.0cm
• Comfort: 2°
• Fill Type: Insulite Alpha
• Limit: -4°
• Extreme: -21°
• Suggested Usage Min: -2°
• Suggested Usage Max: 20°
• Ext Chest Width: 85cm
• Int Chest Width: 83cm
• Max User Height: 190cm
• Int Foot Width: 48cm
• Int Length: 205cm
• Shape: Mummy
• Performance: 3 Season
• Zip Side: Left
• Tog: 10.0

• Polair® Hex Shell - A tough hexagonal ripstop polyester that is strong, highly breathable, and machine washable
• Polair® Lining - Super soft lining which is also hardwearing and easily washable, Polair® polyester
• Alpha Insulation - Lightweight and extra warm, Alpha has a great loft while compressing to a small pack size
• Mummy Shaped Sleeping Bag - Tapers from the shoulders to the foot, reducing pack size and increasing thermal efficiency
• Off-Set Double Layer Construction - Off-set seams prevent cold spots at the stitching lines
• Horizontal Stitching - Evenly spaced to hold insulation in place and ensure even distribution throughout
• 3D hood with Drawcord Closure and Shaped Sides - Prevents heat loss from the head whilst the shaped sides provide additional comfort. The convenient drawcord closure provides flexible adjustment
• Insulated Adjustable Shoulder Baffle - Retains heat within the sleeping bag
• Zip Guard with Anti-Catch Piping - Helps to prevent the zip from snagging on the lining, allowing easy opening and closing
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Woven Zip Puller - Allows you to quickly and easily move the zip
• Internal Pocket - Provides convenient storage for small items
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Temperature Ratings Independently Measured - In accordance with EN 23537:2016. Extensively tested to meet accurate temperature rating standards for peace of mind
• Total Weight: 1.65kg
• Packsize: 29.0 x 20.0cm
• Comfort: 2°
• Fill Type: Insulite Alpha
• Limit: -4°
• Extreme: -21°
• Suggested Usage Min: -2°
• Suggested Usage Max: 20°
• Ext Chest Width: 85cm
• Int Chest Width: 83cm
• Max User Height: 190cm
• Int Foot Width: 48cm
• Int Length: 205cm
• Shape: Mummy
• Performance: 3 Season
• Zip Side: Left
• Tog: 10.0

• Polair® EcoNet Lining - Our new Recycled 20D Nylon Inner Lining Fabric is made from recycled fishing nets and features a tightly woven construction, creating a warm, soft to touch and easily compressible material which is also water and tear resistant
• Polair® EcoNet Shell – Our new Recycled 20D Diamond Ripstop Nylon shell fabric is made from recycled fishing nets and is designed to be durable, water-resistant and easily compressible.
• EcoLoft® Insulation – Our EcoLoft® insulation is a recycled synthetic which has been engineered to imitate the characteristics of real down filling, which has a high loft and dries fast
• Multi-Directional Baffle Construction - Using thermal-reverb reflective interlining, vertical direction baffles across the chest to increase warmth and horizontal baffles across the feet to maintain an even distribution of insulation around your body’s lower half.
• Thermal Reverb - Aluminimised layer reflects heat back to the user to increase warmth
• Insulated Adjustable Ergonomic Shoulder Baffle – Ergonomically shaped to fit around your shoulders to ensure you retain heat within the sleeping bag
• Temperature Ratings Independently Measured - In accordance with EN 23537-1:2022. Extensively tested to meet accurate temperature rating standards for peace of mind
• 3D Hood with Multi-Cord Closure - Precise fit with dual cord adjustment. Individual cord diameter allows easy differentiation in the dark
• 4-Strap Compression Stuffsack - Minimises pack size for easy transportation
• Arrow Foot - Shaped foot area allowing feet to relax into their natural position
• Auto-Lock Two-Way Zip - Seals in warmth and provides adjustable ventilation. Auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Hanging Loops - Allows you to easily hang your bag for quick and easy drying
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Internal Pocket - Provides convenient storage for small items
• Omega Shaping - Engineered to position zips and seams in the lower section of the bag. Ergonomically shaped to fit around head and shoulders for improved heat retention
• Zip Guard with Anti-Catch Piping - Helps to prevent the zip from snagging on the lining, allowing easy opening and closing
• Total Weight: 1.75kg
• Packsize: 36.0 x ø20.0cm
• Fill Type: EcoLoft Recycled Synthetic Filling
• Limit: -6°
• Extreme: -24°
• Suggested Usage Min: -6°
• Suggested Usage Max: 15°
• Ext Chest Width: 85cm
• Int Chest Width: 82cm
• Max User Height: 190cm
• Int Foot Width: 48cm
• Int Length: 205cm
• Shape: Mummy
• Performance: 3 Season
• Zip Side: Right

• Polair® EcoNet Lining - Our new Recycled 20D Nylon Inner Lining Fabric is made from recycled fishing nets and features a tightly woven construction, creating a warm, soft to touch and easily compressible material which is also water and tear resistant
• Polair® EcoNet Shell – Our new Recycled 20D Diamond Ripstop Nylon shell fabric is made from recycled fishing nets and is designed to be durable, water-resistant and easily compressible.
• EcoLoft® Insulation – Our EcoLoft® insulation is a recycled synthetic which has been engineered to imitate the characteristics of real down filling, which has a high loft and dries fast
• Multi-Directional Baffle Construction - Using thermal-reverb reflective interlining, vertical direction baffles across the chest to increase warmth and horizontal baffles across the feet to maintain an even distribution of insulation around your body’s lower half.
• Thermal Reverb - Aluminimised layer reflects heat back to the user to increase warmth
• Insulated Adjustable Ergonomic Shoulder Baffle – Ergonomically shaped to fit around your shoulders to ensure you retain heat within the sleeping bag
• Temperature Ratings Independently Measured - In accordance with EN 23537-1:2022. Extensively tested to meet accurate temperature rating standards for peace of mind
• 3D Hood with Multi-Cord Closure - Precise fit with dual cord adjustment. Individual cord diameter allows easy differentiation in the dark
• 4-Strap Compression Stuffsack - Minimises pack size for easy transportation
• Arrow Foot - Shaped foot area allowing feet to relax into their natural position
• Insulated Zip Baffle - Retains heat within the sleeping bag and reduces cold spots
• Internal Pocket - Provides convenient storage for small items
• Omega Shaping - Engineered to position zips and seams in the lower section of the bag. Ergonomically shaped to fit around head and shoulders for improved heat retention
• Two-Way Auto-Lock Zip - Seals in warmth and provides adjustable ventilation and the auto-lock prevents the bag from opening during the night and can be accessed from inside the bag
• Zip Guard with Anti-Catch Piping - Helps to prevent the zip from snagging on the lining, allowing easy opening and closing
• Total Weight: 2.05kg
• Packsize: 38.0 x ø22.0cm
• Comfort: -3°
• Fill Type: EcoLoft Recycled Synthetic Filling
• Limit: -10°
• Extreme: -28°
• Suggested Usage Min: -10°
• Suggested Usage Max: 10°
• Ext Chest Width: 85cm
• Int Chest Width: 82cm
• Max User Height: 190cm
• Int Foot Width: 48cm
• Int Length: 205cm
• Shape: Mummy
• Performance: 4 Season
• Zip Side: Right

• 850+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
• 10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox.
• Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
• Spark 7C/45F & 1C/30F Primary zip - 1/2 length #5 with zip-plow and two sliders. Spark -9C/15F & -18C/0F Primary zip - 3/4 length #5 with zip-plow and two sliders.
• Vertical chest baffles, horizontal baffles lower half and base. SPARK 7C sewn through quilted construction throughout. SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout.
• Spark 7C, -1C & -9C Standard front draft collar. SPARK -18C Double draft collars
• Spark 7 & -1 can't be paired. Spark -9 & -18: Pairs with Women's Sea to Summit bags.
• QuiltLock System integrates with StS quilts
• Compression Sack: 8 Litres
• Fill Weight: 265g
• Max Height: 185cm
• Season Rating: 2.5
• Weight: 493g

Please Note: We are unable to accept returns of Down sleeping bags for obvious hygiene reasons unless faulty.
All details are in the listing, so please do NOT buy these if you are unsure of suitability.

Experience ultimate warmth without added weight or bulk with the Spark Ultralight Mummy Sleeping Bag Series.
From a lightweight down-filled liner to a fast-and-light option for cold weather, each model boasts premium materials and a minimalistic design for top-notch performance.
Despite their ultralight construction, the Spark sleeping bags offer a snug fit and enough room to move for the backcountry adventurer focused on top performance.

Features:

• 850+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
• 10-Denier Nylon shell and lining. 10-Denier Nylon waterproof-breathable hood and footbox.
• Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
• Spark 7C/45F & 1C/30F Primary zip - 1/2 length #5 with zip-plow and two sliders. Spark -9C/15F & -18C/0F Primary zip - 3/4 length #5 with zip-plow and two sliders.
• Vertical chest baffles, horizontal baffles lower half and base. SPARK 7C sewn through quilted construction throughout. SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout.
• Spark 7C, -1C & -9C Standard front draft collar. SPARK -18C Double draft collars
• Spark 7 & -1 can't be paired. Spark -9 & -18: Pairs with Women's Sea to Summit bags.
• QuiltLock System integrates with StS quilts
• Compression Sack: 13 Litres
• Fill Weight: 480g
• Max Height: 185cm
• Season Rating: 3.5
• Weight: 730g

Please Note: We are unable to accept returns of Down sleeping bags for obvious hygiene reasons unless faulty.
All details are in the listing, so please do NOT buy these if you are unsure of suitability.

Discover the perfect balance of weight and warmth with the Spark Pro -1°C Ultralight Down Sleeping Bag by Sea To Summit. Designed to maximize comfort and minimize bulk, this sleeping bag is ideal for any lightweight adventure. Its versatility allows for use in a variety of conditions, while its compact size and optimal warmth to weight ratio make it a top choice for any outdoor enthusiast.

Features:

• 950+ FILL Power, RDS-certified, Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
• Featuring 10-Denier Nylon shell and lining fabric, these lightweight fabrics offer breathability, protection and effective temperature regulation for premium comfort in the outdoors.
• 10D Nylon's waterproof and breathable features offer added protection and prevents exposure to tent wall condensation.
• Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight.
• Free Flow Zip System: Primary zip - full length #5 with zip-plow and two sliders. Secondary zip - 1/4 length #3 with zip-plow and two sliders. Footbox zip - #3 with two sliders.
• Spark Pro -1 Vertical chest baffles, horizontal baffles lower half and base, box wall baffles top half of bag and sewn through quilted construction lower half. Spark Pro -9 Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout.
• Fitted front draft collar: scalloped over the neck and oversized at the shoulders.
• Technical fitted hood with soft touch adjustment. Extra deep for cosy like feel.
• Pairs with Women's Sea to Summit bags.
• QuiltLock System integrates with STS quilts
• Compression Sack: 8 Litres
• Fill Weight: 310g
• Max Height: 185cm
• Season Rating: 2
• Weight: 619g

Please Note: We are unable to accept returns of Down sleeping bags for obvious hygiene reasons unless faulty.
All details are in the listing, so please do NOT buy these if you are unsure of suitability.

Experience ultimate comfort and versatility on your travels with the Sea To Summit Trek -1°C Down Sleeping Bag - Regular Snorkel Blue. Featuring a tapered-rectangular mummy shape and a dual-zip ventilation system, this sleeping bag allows you to adjust the temperature to your liking. The Free Flow Zip System includes a full-length side zip and secondary foot box zip for increased ventilation or the option to open the bag completely like a duvet. Made with high-quality down, this bag will keep you warm and cozy on chilly nights. The semi-rectangular cut provides ample room for movement, making it perfect for any sleeping position. With its lightweight and compact design, the Trek is a must-have for all your outdoor adventures.

Features:

• ULTRA-DRY Down 650+ Loft 85% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
• Full-length YKK® #5 main side zip and foot box zip provide superior ventilation and allow the bag to be used as a comforter
• Shaped hood and oversized zip draft tubes (Trek -12°C also has a draft collar, fits snugly around shoulders) to seal in warmth and keep cold out
• Internal pocket for phone / GPS / valuables
• Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout.
• Trek -1C & -9C Fitted front draft collar: scalloped over the neck and oversized at the shoulders. Trek -18C/0F Double draft collars: fitted front collar and tubular back collar.
• QuiltLock system allows one of our quilts to be locked into place over the top of the Trek, giving you modular and versatile sleeping bag
• Includes lightweight Ultra-Sil compression bag and storage cell
• Form a snug double sleeping bag by zipping to any women's Sea to Summit sleeping bags
• Sustainable construction with 100% recycled 20D polyester shell and lining, a PFC free water repellent coating and RDS down
• Compression Sack: 13 Litres
• Fill Weight: 380g
• Max Height: 185cm
• Season Rating: 2.5
• Weight: 1119g

Please Note: We are unable to accept returns of Down sleeping bags for obvious hygiene reasons unless faulty.
All details are in the listing, so please do NOT buy these if you are unsure of suitability.

• ULTRA-DRY Down 650+ Loft 85% Down Cluster Premium Duck Down certified Responsible Down Standard (RDS)
• Full-length YKK® #5 main side zip and foot box zip provide superior ventilation and allow the bag to be used as a comforter
• Shaped hood and oversized zip draft tubes (Trek -12°C also has a draft collar, fits snugly around shoulders) to seal in warmth and keep cold out
• Internal pocket for phone / GPS / valuables
• Vertical chest baffles, horizontal baffles lower half and base, box wall baffle construction throughout
• Trek Women's -1C Fitted front draft collar: scalloped over the neck and oversized at the shoulders. Trek Women's -9C Double draft collars: fitted front collar and tubular back collar.
• QuiltLock system allows one of our quilts to be locked into place over the top of the Trek, giving you modular and versatile sleeping bag
• Includes lightweight Ultra-Sil compression bag and storage cell
• Form a snug double sleeping bag by zipping to any men's Sea to Summit sleeping bags
• Sustainable construction with 100% recycled 20D polyester shell and lining, a PFC free water repellent coating and RDS down
• Compression Sack: 26 Litres
• Fill Weight: 800g
• Max Height: 170cm
• Season Rating: 3.5
• Weight: 1612g