Mission Peak Gear Sierra 4800 Internal Frame Hiking Backpack FRONT and TOP LOADER - Easily access to the main compartment with front panel loading. Easy access to separate bottom sleeping bag compartment with dual front zippers. High quality SBS zippers throughout. 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!