The BackLight 36L back panel opening allows access to all of your gear, when taking the pack off is not an option.The backpack features 11 liters of daypack capacity providing plenty of space for personal gear, including separate dedicated compartments for a 10" tablet and 16" MacBook Pro. WHAT FITS IN THIS BAG? Holds 2 gripped camera bodies with lenses attached and 4–6 standard zoom lenses plus a flash Fits up to a 16” laptop and a 10” tablet Fits personal gear in the 11L front compartments Maximum lens size: 600mm f/4 detached from body FEATURES KEY FEATURES Back-panel opening provides access to all of your camera gear without taking the pack off, allowing you to work out of the bag without getting your harness dirty, wet, muddy or icy. Dedicated compartments fit up to a 16” MacBook Pro and a 10” tablet. Daypack capacity! Front pockets totaling 11L carry personal gear for a day’s 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.