Lowepro Vertex 300 AW Backpack (Black) The Vertex 300 AW is a backpack designed to carry 1-2 Pro digital SLR, large 35mm or medium format system, 6-8 lenses (up to a 400mm f/2.8), tripod or monopod, flash and digital accessories. The pack is suspended with an adjustable 8-point harness system Additional external features include two outer pockets for memory cards and filters and midpocket large enough for a 17” notebook computer. The pack is further detailed internally with adjustable velex-lined padded dividers and additional accessory pockets.