EACHSHOT 5 Pack Anti-lost Camera Lens Cap Holder Keeper Lanyard Strap for Canon Nikon Sony Pentax Sigma DSLR Universal Lens Cap Keeper Holder Easy to use: The small adhesive button sticks onto the front of your lens cap. The elastic loop on the other end expands to fit around the barrel of your lens. The lens cap will remain attached, hanging from your lens. Lightweight and durable. Works with all types of lens caps; center-pinch and snap-on.