The Chill-Its 5157 Cargo Hydration Pack provides on-the-go hydration with premium features such as multiple gear storage options and padding for all-day convenience and comfort. The 3-liter bladder features a wide DualCap for easy no-spill filling with water or ice. Both the pack and tube are insulated to keep water cool in the heat. The antimicrobial bite valve with cover protects against contaminants for clean all-day drinking. The pack itself is made with durable 600D water-resistant ripstop polyester for protection in rough conditions. A zippered top keeps the bladder secure while also preventing dirt and debris from getting into the pack. Breakaway hook-and-loop shoulder straps safely detach to prevent the pack from dangerously snagging. The premium features of this pack include foam padding on the shoulder straps, plus venting on the straps and back for all-day comfort.