Dubbed the ultimate key fob for boaters, this smart little gizmo is ideal for anyone who works or plays on water as it automatically inflates when it hits the water. So, if you keys fall overboard, they are instantly floating and "findable"! Please Note: * One use only. Do not expose to water (unless absolutely necessary, of course). * Suitable for items weighing up to 4.2oz (120g). * Sensitive to water and humidity. * Not suitable for children under 3 years due to small parts. * The chemical powder in the tube is a mild irritant. Prevent contact with eyes, skin and nose. Avoid inhalation. Dispose of activated product promptly. Recycle. Features: * When keys or other items fall in the water, Key Buoy pops open and its air tube automatically inflates. * Rises to the surface within 30 seconds. * Stays afloat for at least 40 minutes. * Ideal for keys, small tools, Swiss army knives, hand held radios & GPS units, cell phones and more. * Perfect for boaters, sailors, kayakers, water-skiers, windsurfers and house-boaters. Ingredients: * Sodium Bicarbonate, Tartaric Acid.