The Expedition 7x is a large pack for a full complement of photo equipment. The main compartment is completely foam padded with numerous adjustable, foam-padded dividers to protect multiple pro-size digital and film SLRs with lenses attached, a full range of lenses, and flashes. A foam-padded front pocket with a water-resistant zipper holds most 15.4" screen laptops. Two "wing" accessory pockets with water-resistant zippers organize and provide quick access to important accessories without disturbing the photo gear. These "wing" accessory pockets also feature Tamrac's patented Memory & Battery Management System that uses red flags to identify available memory cards and batteries from ones that have been used up. A tripod is carried between these pockets with Tamrac's QuickClip tripod attachment system. Inside, the camera with a long zoom lens attached is suspended on two vertical, foam-padded dividers that are internally reinforced with rigid plastic. A restraint strap holds lens firmly in place. A Dual-Hinge Divider System allows a second SLR to be carried with a lens attached. Three Windowpane-Mesh pockets inside the front flap visibly organize filters, film and other accessories. A plastic, foam-padded platform in the bottom provides shock protection while the LockDown Rain Flap protects the zipper from the elements. The state-of-the-art harness system with Dual-Density Comfort Pads provides maximum carrying comfort while Air Flow Channels help keep you cool and dry during extended use. The pack is also equipped with a BioCurve dual-pivoting waist belt and an expandable sternum strap. Internal Dimensions: 11W x 6.25D x 16H. External Dimensions: 13W x 13.5D x 19.5H. Weight: 6 lbs. 6 oz.