Aktiv Pak AP200 All-Weather Sling Digital SLR Camera Backpack Case (Black) for Canon EOS 7D, 5D Mark II III, 60D, Rebel T3, T3i, Nikon D3100, D3200, D5100, D7000, D800, A35, A55, A57, A65, A77 Digital SLR Cameras All Weather Cover - Protects gear against bad weather, dust and sand Carry-On Compatible - Fits within common USA airlines carry on guidelines Ergonomic Sling Strap distributes weight evenly to comfortably carry heavy equipment. Multi-Accessory Pockets, built-in memory card pouch, and built-in microfiber cleaning cloth Mesh covered back Pad & Sling Strap provides breathable comfort during long treks