The PlayStar Gym Rings are softer and lighter than the big cold metal ones in school. This set of two contoured rings includes plastic coated chains. They’re molded to fit little hands they’ll never get rusty and because they’re lightweight they won’t conk anyone in the head.About PlayStarPlayStar was started in the Heartland of America in the garage of an entrepreneur with this dream: to build a foundation of people who were hardworking friendly professional and self-motivated to do the right thing to offer the ultimate customer service and provide the highest value best quality and most innovative products. All PlayStar Playsets are designed following company safety standards that exceed government guidelines to enhance your child’s physical development and social skills.