Outex wrist strap works in conjunction with the Outex Strap Holder. The wrist strap is made of waterproof, long lasting materials to withstand the rigors of outdoors photography in any environment. It snaps on/off the strap holder, just like the neck strap for easy accessibility when you need it. It is ideal for in-water or underwater use, because it frees your hands to swim while keeping the camera gear close.