This professional custom hydration pack is built for serious outdoor use. Its Water-Resistant And Durable Material—high-density polyester with reinforced lap-knots—is further protected by a free waterproof rain cover. Experience Ergonomic Breathable Technology via the 3D touch suspension system and steel frame support, which evenly distributes weight and reduces back discomfort. Hydration is paramount, which is why this bag includes a 3L Leak-proof Water Bladder with an easy-fill large opening, keeping users active all day. The Large Capacity & Multi Compartment design offers superior organization, featuring a top pocket, hip pockets, and a convenient bottom pocket with access to the main compartment, perfect for shoes or sleeping bags. The added reflective design boosts night safety. This high-feature bag is an excellent choice for retailers in the outdoor equipment market.