The Chill-Its 5156 Low-Profile Hydration Pack provides on-the-go hydration provides on-the-go hydration with premium features such as accessory storage and padding for all-day convenience and comfort. The 3.0L (3000mL) 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 lightweight and low-profile design is comfortable for wear both on and off the worksite. The pack itself is made with durable 600D water-resistant ripstop polyester for protection in rough conditions. For all-day comfort and breathability, it features foam padding on the shoulder straps and venting on both the straps and back. A zippered top keeps the bladder secure while also preventing dirt and debris from getting into the pack.