Fabric: Ripstop. Fabric Technology: Breathable. Design: Contrast Detail, Logo, Triangular. Fastening: Toggle, Zip. Adjustable Chest Strap, Air Mesh Back, Carry Strap, Hydration Bladder Compatible, Laptop Sleeve, Padded Back, Padded Hip Belt, Reflective Detail. Compartments: 1 Main Compartment, Bottle Holder. Capacity: 25.1L. Please Note: Hydration Bladder Not Included. Ref: UTMW1686