Features 100% Waterproof Main Compartment, 35 Liters of Storage, High Quality Marine Grade Waterproof Vinyl 2 Way Purge Valve (inflation/compression), Water resistant zipper outer storage pocket, Drink Holder Bungee straps, Padded lower back support, Padded waist & hip support Waterproof padded shoulder straps, Tie downs / Front straps, Chest straps, Internal zippered pocket Removable internal Velcro wallet compartment, Durable rubber top hold handle Description Product Description DryCASE Waterproof Backpack. This is the perfect waterproof backpack for any active person who wants to bring their belongings along with them during any adventure. The backpack is 100% waterproof and is one of a kind, because of its handy purge valve. With the purge valve you can inflate or compress the backpack, and even use it as a draining tool if using the backpack as a shower or cooler. The backpack includes a fully waterproof main compartment capable of holding 30 Liters, an internal zippered waterproof pocket to store smaller items, a front mesh pocket so you can keep wet items out of the waterproof area, side water bottle holder, bungee cords that can hold your other DryCASE items, and lots of padding on the shoulder straps and back support for a comfortable hold. Product Features: 100% Waterproof Main Compartment 30 Liters Storage Capacity Made of High Quality Marine Grade Waterproof Vinyl Two Way Valve for Inflation or Compression External Zippered Mesh Pocket for Your Wet Gear Mesh Side Pocket/ Drink Bottle Holder Waterproof Padded Shoulder Straps Padded Waist, Hip, and Lower Back Support Materials:pvc/marine grade vinyl Dimensions: 28"L x 15"W x 19"H Weight: 2.4 lbs.