Let your little ones get the wiggles out in almost any seat with the kid-sized Jr. Balance Cushion. Not only does this cushion turn almost any chair into an active seat, but it also encourages kids to learn and practice healthy posture while benefiting from active sitting. Cushion features a bright and fun color with a textured surface that stimulates blood flow. Includes an inflation needle for customized firmness but does not include a pump. Ideal for ages 5 to 12. . Turn almost any seat into an active one. Helps kids get the wiggles out. Encourages healthy posture. Textured surface stimulates blood flow. Ideal for ages 5 to 12. . Measurements: 13″ diameter. Weight Capacity: 175 lbs. . Materials: PVC. Compatibility: Cannot be used on chairs with painted/finished surfaces. Resources: Care, Setup, & Tips.