I've had this bag since August 2020 and its been on the West Highland Way twice that year and the Rob Roy Way this year. Took it outside today so I could air it and noticed a feather point poking out the seam near the foot and it had made a noticeable tear in the material ie 2-3 mm and the feather was poking out about the same. I managed to pull the feather back into the bag but it still left that little hole - not sure if its warranted so I just stuck a small piece of repair tape over it so no more find their way out that hole. Bottom line is, in my opinion, that the material is too thin or some feathers are too sharp... This likely happened while stuffing the bag back into its sack last trip. On further reflection, this could probably happen to any of the modern ultra light and light sleeping bags unless the feather's tips are blunted. On another note. I found the bag a little cold at 2 C with baselayer. I'm a side sleeper and the feathers, so the side you're lying on gets packed down, then when you turn, that side has a cold spot.
I also have the Cobra 600 at 1100 grams and for an extra 200 grams, regret not buying the Cobra 400 rather than this 200 model.
In my opinion this bag is hard to beat in terms of price and warmth for the weight. The bag on it’s own is only 620g on my scale and I’ve been perfectly warm in it in just socks and base layers down to 3 degrees.
Definitely a lightweight and good-sized choice for 3 seasons, but avoid using this during the winter or in particularly cold areas.