Material: made of plastic PS + alloy metal key ring, durable, lightweight and portable, easy to carry and store for you, foaming keychain can float on the water easily. It prevents your key from dropping into the water and going missing when playing water sport, professional floating keychains is a useful water sports accessories, widely used in boating, fishing, whitewater rafting, canoeing, sailing, jet ski, kayaking, water skiing, swiming and other outdoor water sports. It is also a great gift for marine workers, such as fishermen, sailors etc.