Gregory Backpacks & Bags Sula 8L H2O Pack - Women's Aurora Black One Size 1433699806. Designed to integrate seamlessly into the pack's design eliminating refill hassles and offering quick hydration while on the go.Access your water without interrupting your momentum with the included 3D Hydro Reservoir. Designed to integrate seamlessly into the pack's design eliminating refill hassles and offering quick hydration while on the go.The quick-access padded top-pocket and large zippered hipbelt pockets keep items protected and close at hand.