There are 15 camera bags in the new M-ROCK line, sized to hold all of today's most poplar digital cameras and camcorders -- from the ultra compact digital camera up to a bag that can hold a digital SLR body with five or six lenses. The modular system offers the possibility of increasing the carrying capacity or reducing it as needed. Any (or all) of the six smaller bags can attach to the left and right sides of the nine larger models. The Modular Belt converts the larger camera bags into a comfortable fanny pack and also can attach two of the smaller modular bags. The larger bags come with two padded shoulder straps and can be carried as a shoulder bag, a backpack or even a chest-pack, without purchasing a separate harness system.