Harken Sport Rogue Waterproof Backpack, Black/Carbon Roll-top closure for watertight seal and air-purge valve to save space Padded, ventilated, fully adjustable straps, and ergonomic shoulder, waist, and chest straps to distribute weight Two exterior water bottle pockets Zig-zag elastic exterior cord for jacket storage Optional matching extras: Waterproof Waist Pouch (P/N 2285) and Removable Lap Top Sleeve (P/N 2286)