Mission Peak Gear Alpine 3600 Internal Frame Hiking Backpack ADJUSTABLE TORSO LENGTH - Adjustable torso length for a customized fit to your torso. HYDRATION SYSTEM COMPATIBLE - Fits up to 2 liters of water bladder or reservoir. Water tube exit port and tube clip by the shoulder strap for easy access to drink water. PADDED STRAPS and LUMBAR BACK SUPPORT - Adjustable padded hip belt and shoulder straps make the weight sit comfortable on your hip and shoulders. Expandable sternum chest strap helps reduce the weight from your shoulders with easy to reach attached whistle. RAIN COVER INCLUDED - Built-in rainfly to protect the pack when carrying your pack under wet condition. WARRANTY - Includes 1 YEAR limited manufacturer's warranty. We stand behind our quality!