FODSLR 4pcs/lot Neoprene Soft Protector Camera Lens Pouch Bag Case Waterproof Backpact Size S M L Xl for Sony Canon Nikon Pentax Olympus Panasonic 3mm thick (roughly) Neoprene - provides great protection and shock absorption for your lenses. Belt Loop - allows you attaching the pouch to your belt, for convenient carrying. Hook - allows you attach the pouch to anywhere with a ring (such as camera bags and backpacks). Material: water-resistant neoprene Please note that the usable height of the pouch is 2-3cm