The Exped 80L Bergen Liner can waterproof a Bergen 100% and it is used by military. It's a waterproof and dustproof bag that keeps things dry, it works by inserting products into the bag then folding over the top and connecting the clip. Roll the neck at least 3 times and clip the buckles for a water-proof seal. (Please allow for this when ordering size) Made from 70 denier PU-coated taffeta nylon with fully taped seams this liner is big enough to keep everything in your pack dry and dust free whilst on the move. The bright inner PU coating lights up the interior of the bags, making it easy to find your things.
Material: Coated 70D Taffeta nylon with a water column of 10,000 mm