Bestway swim ring manufactured from sturdy pre-tested vinyl. Swim ring comes with a safety valve on the air chamber. The unique design gives your kid a relaxable and comfortable fit while in water also gives lots of fun while playing in the water. These are a great way to have fun and to build water confidence in the 3 to 6 years age group range. Swim ring must be used under supervision of an adult in the water within an arms distance of the kids wearing the swim ring.