Gaiam Balance Disc</br></br><div style=text-align:left"><b>[Product Information]</b><br><ul><li>Turn any chair or seat into an active one by placing the disc on top adding instability to strengthen your core while improving posture and sitting comfortably</li><li>Use with a variety of strength and balance exercises， in or out of a chair</li><li>Control the disc's firmness to increase your workout challenge</li><li>Works outdoors for a quick seat or on hardwood and carpet flooring and also makes a great meditation seat or wherever you need a little extra cushion</li><li>Measurements: 16 inch diameter</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51jT1PhYIZL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/513rFUlw3RL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41pgezQ%2B8HL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41PR6isdIDL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/410sUUFx4dL.jpg' noproxy></br>"