The Tamrac 604 is larger than the 603 and is a great bag for an SLR camera, three or four lenses and a flash. The Lensbridge and Lensgate divider systems holds the camera with attached lens above the rest of the equipment, while adjustable foam-padded dividers protect the rest. This bag also features a Pop-Off film pocket, a full-length ZipDrop front pocket with organizer compartments, the Slide Pocket with ID tag in front for film and filters, a unique Piggy-Back Pocket. Accepts the M.A.S. and S.A.S (Modular Accessory and Strap Accessory) accessories.