Made of Nylon and soft foam it's lightweight and the adjustable comfort wrist strap fits most wrist sizes. The floating camera wrist strap protects your waterproof camera from sinking while you are snorkeling or swimming. It's bright color makes it easy to find on the surface of the water. You can also attach keys, sunglasses or other small waterproof devices. Great for trips to the pool, lake, or ocean. Also use it when snorkeling, diving, kayaking, surfing, rafting, etc. 4.2" L x 2" W