The Alta Sky 45D is a dynamic backpack that sets a new standard for adaptable carrying and working solutions. It offers versatility combined with reliable gear protection like never before. Featuring innovative 1/3-2/3 division the larger compartment can be fully accessed from the rear, quickly reached from the side, or separately opened from the top, while the smaller compartment enjoys quick individual opening from the bottom front. The multitude of dividers and access points leave you the choice of just how much professional gear and how much personal gear to carry. Maximum capacity can fit up to a Pro DSLR with attached lens (up to 70-200mm f/2. 8), 2-3 lenses, a flash, and accessories in the top 2/3 compartment and a CSC (compact system camera) with additional lens in the bottom 1/3 compartment. If carrying less gear one can easily turn this backpack into a day pack or hiking backpack, deciding which separate access point is for photo gear and which is for personal or hiking gear. Secure rear compartment protects up to a 13laptop and can also fit a tablet in the additional padded sleeve (note that double usage is only possible for some laptop + tablet combinations). organize all other gear and personal essentials exactly where you need them; either secured in an organizer pocket, or on hand at any given moment in a slip-in pocket. Stay hydrated with two large side pockets for water bottles. Link, hang, and sling on anything you can imagine using the multitude of straps, loops and innovative connection features integrated into the surface of the backpack. Designed to carry heavy gear loads for extended periods of time, we set the bar for comfortable carrying at a new high. Our advanced ergonomic back and harness system features a well-padded breathable 3D back, uniquely shaped easy to adjust shoulder straps that perfectly contour to your back and torso, adjustable sternum strap, and well-padded supporting waist belt.