ProSource Balance Disc Cushion also known as Wobble Sit Cushion or Therapeutic Balance Disc exerciser to enhance balance, posture also great rehabilitation for knee and ankle injury More about this item IMPROVE CORE STRENGTH & BALANCE – Strengthens and engages multiple core muscles at once to maintain balance during exercises MULTIPURPOSE - Can be used for working out or as a seat cushion to improve posture and balance, rather than using a stability ball DUAL-TEXTURED SURFACE - ensures a non-slip grip, with raised massaging bumps on one side and smoother bumps on the other Excellent new condition - comes fully inflated (Adjust by releasing air or inflate using your bike pump) Color: Black PORTABLE - Easy to transport for fitness on-the-go. Dimensions: 14” diameter, 3” height; Weight: 2.2 lbs; Made of PVC PRICE: $25 Pick-up Only - North York