These Deluxe Swing Belts by Gorilla Playsets are a must for any play set. They are a one piece injection molded design rated at 225 lbs. They conform to the child's body for added safety and have built in UV protection so they won't heat up or fade in direct sunlight. Chains are coated in a grippy plastic to help keep them cool and prevent pinches. For ages 3 and up.