Compatible with lenses from Canon, Nikon, Olympus, Fuji, Pentax, Panasonic, Sony, Leica, Sigma, Tamron, Vivitar, Minolta, Mamiya, Yashica,,Kodak, Konica, Hasselblad, Ricoh, Zeiss & Lensbaby Made of 3mm thick neoprene material. Set of 4: Small, Medium, Large, X-Large Comes with hook, allows to hang to belt, hook, or ring Drawstring and lock catch design, fashion and convenient