Tamrac Velocity 8 Photo Sling Pack (Black) Accommodates a pro digital or film SLR with a grip and a 70-200mm zoom lens attached. Can be carried comfortably like a backpack, and a well-padded sling strap comfortably distributes the weight, but need not be removed to quickly access photo equipment. Features Tamrac's patented Memory &amp; Battery Management System that uses red flags to identify available memory cards and batteries Large mesh pocket is ideal for carrying an energy bar or water bottle. Customize this sling pack with Tamrac's Modular Accessory System components.