Details & features Surftrek Storm 40L - Roll-Top Wet/Dry Backpack Style ABYBP00161 Color Code mil Features Fabric: Durable PVC and dual side waterproof tarpaulin fabric Wet/dry compartment Welded seams Dual buckle closure Two-way air valve Side mesh water bottle pocket Interior water-resistant pocket External bungee-compression system External Hypalon gear loops Airmesh padded shoulder straps with removable sternum strap and whistle buckle Sizes: 28.75" [H] X 12.5" [W] X 8.5" [D] Volume: 40 L capacity Materials [Main Fabric] 100% Polyvinylchloride Surftrek Storm 40L - Roll-Top Wet/Dry Backpack for Unisex