The BackLight 26L, with a rear-panel compartment for photo gear, allows you to access your gear without taking off the backpack.You can change lenses or just snap a quick photo by simply by spinning the bag to the front of your body while the waist belt is still secured. WHAT FITS IN THIS BAG? Holds 2 standard-size camera bodies and 4-6 standard zoom lenses, plus a flash Fits personal gear in the 9L front compartments Fits up to a 16" MacBook Pro Maximum lens size: 200-400 f/4 detached from body FEATURES KEY FEATURES Back-panel access provides access to all of your camera gear without taking the bag off, allowing you to work out of your bag without getting the harness dirty, wet, muddy or icy. Dedicated compartments fit up to a 16” MacBook Pro and full-size tablet. Daypack capacity! Front pockets totaling 9L carry personal gear for a days outing: extra layers, a light jacket, food, etc. ADDITIONAL FEATURES Rear-panel access also adds security when traveling since your camera gear is protected behind your back. Meets most international and US carry-on requirements Daisy chain, ice axe loops and additional lash points for expanding your carry capacity Includes tripod/monopod mounting system on front or side Comfortable padded waist belt for all day comfort on the trail with webbing rail for modular pouches or accessories Flap-keeper neck strap allows you to work out of the bag, unencumbered Two large water bottle pockets with cinch cord fit a 32oz Nalgene Side compression straps with locking SR buckles for additional lash points Air channel and lumbar support on rear-panel for all-day comfort Ergonomic zipper pulls are easily gripped with gloves or frozen fingers Highest quality YKK zippers, 420D Velocity and 420D high-density nylon for long lasting durability and strength Front stuff pockets for trail essentials: headlamp, gloves, chargers Adjustable dividers for large telephoto lenses, traditional photo gear, or personal items Top zippered pocket for quick access essentials Interior mesh pockets for storing filters, batteries, cables, etc. Seam-sealed rain cover included Compatible with the Tripod Suspension Kit, Filter Nest, Filter Hive and Switch Case Check with your airline for current carry-on requirements MATERIALS Exterior: For superior water resistance, all exterior fabric has a durable water-repellent coating, plus the underside of the fabric has a polyurethane coating. It also has highest-quality abrasion-resistant YKK RC-Fuse zippers, 420D velocity nylon, 420D high-density nylon, 320G UltraStretch mesh, 350G airmesh, nylon webbing, 3-ply bonded nylon thread. Interior: 210D silver-toned nylon lining, hexa-mesh pockets, high-density closed-cell foam, PE board reinforcement, 3-ply bonded nylon thread.