The Sublue roll-top, thermo polyurethane (TPU)-coated waterproof backpack keeps your gear dry and protected, even when fully submerged underwater. The TPU coating keeps it abrasion-resistant and flexible, while the roll-top closure’s wide mouth opening allows for easy loading. Featuring an external zipper-closure pocket with an internal zippered pocket, alongside a capacity of 30 liters, our multifunctional backpack can easily and safely fit an underwater scooter and other accessories.