Convertible backpack/ shoulder bag that will hold large lenses or a camera system. Holds up to a 500mm f4 lens, 300mm f2.8 lens with SLR attached, or

Convertible backpack/ shoulder bag that will hold large lenses or a camera system. Holds up to a 500mm f4 lens, 300mm f2.8 lens with SLR attached, or SLR with 70-200 attached with hood in position. Foam Collar for large glass: There is a Foam Collar that attaches via hook and loop to the back of the case that can be securely attached to a large lens. This secures the lens in the case and prevents it from wobbling back and forth.