Description of Chrome Transport Sultan Roll-Top Pack The next phase in backpack evolution. Equally suited to land and sea. Chrome roll-top waterproof backpacks challenge the assumptions of how waterproof bags should be built. Chrome Transport's ground breaking design brings together two separate, and typically opposed, ideologies of backpack construction. This dual bag ideology creates a bag that is completely waterproof when it needs to be, but exceptionally functional for the other 99% of the time that it is above water Features: Dimensions - 22 x 15 x 7.5 Volume - 2475 cu. in. All-weather backpack with large easy access external cargo pockets Urethane coated YKK zippers Large external wet-dry pocket Comfortable shoulder straps Daisy chain lash points Haul loop handle Waist strap Adjustable sternum strap Unbreakable stainless steel hardware Fully waterproof liner with high frequency RF welded seams Watertight roll-top closure.