Exped waterproof pack liner terracotta 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 fits 30 up to backpack volumes of 30 l 50 fits 40 l up to 55 l packs incl snow skirt and 80 version