Narrow light weight backpack specifically for long lenses up to an 600mm f/4 or regular DSLR gear KEY FEATURES Accommodates large glass or a medium-large sized kit of standard zoom lenses Specially designed collars for long lenses Specially designed zippers hold their position to avoid accidental opening of the main compartment Additional Features Expand the bag's capacity by adding up to three Modular Pouches for lenses, camera bodies, water bottles, and more! Carry a tripod or a monopod on either side with included straps Deluxe organizer on front zippered pocket Water bottle pockets on each side Pro Speed Belt can be attached for additional comfort & capacity Seam-sealed rain cover included What Fits 600mm f/4.0 unattached 500mm f/4.0 with pro body attached. 800mm 5.6 with aftermarket neoprene lens cap 300mm f/2.8 with standard DSLR attached 200-400mm f/4 with pro body attached Alternately carries a standard pro kit with pro DSLR and 5-8 lenses Tripod/Monopod Mount Please note that the padded collar is only for stabilizing 300 mm and similar size lenses. When fitting larger lenses, you must remove the padded collar as it is not needed. Specifications Internal Dimensions: 22.1 × 49.5 × 21.1 cm Exterior Dimensions: 22.9 × 53.33 × 23.4 cm Weight: 1.1–1.8 kg, depending on accessories used Materials Exterior: Durable water-repellant (DWR) coating Polyurethane coating YKK® RC Fuse (abrasion resistant) zippers 1680 ballistic nylon bottom panel 600D brushed polyester 420D velocity nylon 250D shadow rip-stop polyester Ultra Stretch mesh pockets 3D air mesh 3-ply bonded nylon thread Interior: Belly-o mesh pockets 3-ply bonded nylon thread PE board reinforced removable closed cell velex foam dividers 210D silver-toned nylon Polyurethane-backed velex liner• belly-o mesh pockets 3-ply bonded nylon thread 2x polyurethane coated nylon 210T seam-sealed taffeta rain cover In The Box Tripod straps Reinforced padded dividers Foam ring Foam lens collar Seam-sealed rain cover