The gray Whistler Backpack 450 AW II from Lowepro is a heavy-duty bag designed to comfortably and securely carry your large mobile photo studio. The spacious main compartment features an adjustable partition system that can hold a large DSLR with an attached 70-200mm lens, eight additional lenses, and a shoe mount flash or additional lens. Users of mirrorless camera systems can fit up to ten lenses along with a camera, a flash or additional lens, as well as a backup camera, and for protection of foldable drones and their flight controllers, two padded inserts feature enhanced cushioning. Access to the main compartment is provided by a rear-facing zippered panel with a 180° downward opening. Along the inside of that zippered panel is a memory card pocket and two zippered organizer pockets for hard drives, portable batteries, camera filters, or small electronics. Separated from the main compartment by a waterproof barrier, an expandable front pocket with a bottom drain hole allows wet outdoors equipment such as a climbing helmet, shovel, or ice pick to dry even when carried inside the Whistler Backpack 450 AW II. Integrated between the main compartment and the waterproofed front pocket is a dedicated sleeve that can accommodate a 15" laptop. The laptop sleeve can be reached through a zippered top opening with capacity for books, notepads, snow goggles, or packable clothing. Along the inside the top opening is an accessory pocket for items that need to be secured, yet accessed quickly and conveniently, such as a pair of sunglasses, snacks, or headphones. The Whistler Backpack 450 AW II can be carried via the built-in top handle, or by the adjustable, padded shoulder straps. For heavy loads, this backpack's waist belt transfers weight to the hips for additional comfort, while the sternum strap further limits unintentional shifting around the wearer. Along each side and on the front are two side-compression straps that can each hold and secure a tripod, monopod, or trekking pole. Connected to the surface of the bag with hooks that support up to 220 lb, the compression straps are suitable for skis, a snowboard, or other outdoor mountain equipment which can be harnessed and carried. Featuring durable nylon construction, the Whistler Backpack 450 AW II is built to be weather resistant, and includes a seam-sealed cover for use under heavy rain.