The Tamrac 5273 Expedition 3 Photo Backpack is a compact photo backpack that provides foam-padded protection and quick access to a digital or film SLR camera body with a lens up to 7" attached 3-4 additional lenses flash and accessories. The pack is fully padded with thick closed-cell foam. A cinch strap keeps the camera in place while a large rain flap protects the main compartment zippers. It has a QuickClip™ tripod attachment system with vinyl reinforced mesh pocket front accessory pocket with the Memory & Battery Management System™ that uses red flags to identify which memory cards and batteries are available and which ones are used up. The Expedition 3 has the EasyGrip™ handle inner Windowpane-Mesh™ accessory pockets and padded backpack harness. The bag can be fully customized using the M.A.S. Modular Accessory System™ and S.A.S. Strap Accessory System™ products. Key Features: Compact backpack for 5 lenses flash and accessories Adjustable foam-padded dividers for custom fit of equipment Foam pillars support camera with long lens attached Lens Cinch straps helps to holds everything in place Front pocket holds film and features the Memory & Battery Management System that uses red flags for identifying available memory cards and batteries from ones that are used up Inner Windowpane-Mesh accessory pockets keep small items secure Giant Rain Flaps protect the zippers for the ultimate in rain protection without compromising quick access EasyGrip composite material is used in the handles. The material is exceptionally non-slip yet soft and easy on your hands Foam-padded backpack harness provides easy carrying comfort QuickClip tripod attachment system Allows tripods to be held secure balanced and ready for action. This is a stable solution for photographers traveling with a tripod S.A.S. Strap Accessory System compatible This system has components that attach to the shoulder strap to allow photographers to personalize and customize their carrying systems. M.A.S. Modular Accessory System compatible This system allows photographers to customize and personalize their backpacks shoulder bags and cases by using accessories that quickly attach to the M.A.S attachment slots. These accessories will also attach to any belt or to the Tamrac Modular Accessory Belt.