The ATREQ Balance Air Cushion is an inflatable round cushion which is strong enough to stand or sit on, and when doing so gives an unstable surface making it deal for rehabilitation exercises and improving posture. This simple to use devise will enhance your core stability, leg strength, and balance.
Make your workout that little bit harder by deflating the cushion slightly. Less air increases the difficulty as the cushion becomes soft and unstable. More air makes the disc easier as it becomes more stable.