Backpack, Ready for everything from sprinkles to a deluge, this completely waterproof pack employs a roll-top design to keep water out. Made from 420D nylon with a TPU film laminate, it features a waterproof main compartment and easy-access removable laptop/tablet organization sleeves. The removable high visibility liner and an organization panel with two zippered pockets ensure your gear stays dry and organized. Additional highlights include a quick-access, water-resistant front zippered stash pocket, an ultra-padded air mesh back with Air Flow System, and an off-center removable hip belt. The pack also boasts dual density shoulder straps, a two-way adjustable sternum strap, and a strap containment system to secure all straps.