Exped waterproof pack liner olive 80l the sack in the pack large pack size versions of the fold drybags in contrast to packsacks with round bottoms waterproof pack liners are better shaped to perfectly fit a backpack and completely fill the space comes with a fast access roll n fold closure bright inner pu coating lights up the interior of the bags for better visibility material coated 70d taffeta nylon with a water column of 10 000 mm fits 30 up to backpack volumes of 30 l 50