100 Waterproof Main Compartment, 35 Liters of Storage, High Quality Marine Grade Waterproof Vinyl, 2 Way Purge Valve (inflation/compression), 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, Webbing to secure carabiners to the side of the bag.