The 3N1-25 PL is KATA's most protective and professional sling backpack designed to fit a Pro DSLR with battery pack and mid-range zoom lens attached, plus 3-4 lenses and flash, OR a compact camcorder with accessories. It also accommodates an ipad/netbook and personal gear. This unique bag provides ultimate freedom and allows for three carrying options in one, morphing from sling to backpack and back again. In sling position, the bag easily swings around from back to front to provide quick-draw access to your main camera/camcorder and backup lenses, as well as fast and easy changing of lenses. In backpack position and "X" position you can comfortably carry your equipment for long distance walking when needed. Arrange your equipment in the bottom main compartment of the pack, taking full advantage of the modular Aeriform dividers to custom fit the bag to your equipment. The large top compartment will hold personal gear or additional gear, and the internal pockets and mp3 player pouch will allow you to organize your personal effects as efficiently as your photographic gear. Two external pockets allow quick zippered access to accessories without opening the main compartments.