Heavy-duty construction can handle the roughest terrain & hardiest adventurer TRU Zip closure delivers an immersion-ready waterproof seal Toothless zipper is self-repairing, making wilderness maintenance a non-issue Stackable flat-base design makes packing, storing and rigging easy Two compression straps reduce bag size and stabilize gear NRS Expedition DriDuffel Dry Bag - Adventurers trust the NRS Expedition DriDuffel Dry Bag to store and easily access the items that can’t, under any circumstances, get wet. For the essentials you want to keep close at hand, or kayakers on self-support missions, there’s a fully submersible 12L lap bag.