... 12 months old kidsEnviromental PVC materialWe have 3 sizes: S, M, LS size: inner diameter 8.5-9 ... Advantages:Our swimming ring is designed according to children's body structure, move the swimming point to above, so ... touch the bottom of a pool / bathtub.It’s important that babies acquire different kinds of movements ... adapt. 3 step: Put the baby to turn 90 degrees, so the baby is behind interface. 4 ...