Comes in 4 various sizes: extra small, small, medium, and large. * 3mm thick Neoprene - great protection and shock absorption for your lenses. * Belt Loop - allows to 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). * REMARK : Please note that the usable height of the pouch is 1-2cm lower than the overall height because of the drawstring closure.