JOBST® Anti Em GP™ Knee High Anti Embolism Stockings, Medium Long, 1 Box of 12 Massage Tools Meets the 2011 IOM recommendations 10883 Meets the 2011 IOM recommendations for calcium and vitamin D s shape in order to minimize tissue deformation and facilitate blood flow * Made of flame resistant black neoprene (not made with natural rubber latex) with nickel plated brass inflation valve * Contoured foam base made of fluid resistant polyeth * Weight Limit: 500 lbs 225 kg * Warranty on cushion: 24 Month limited warranty * Warranty on cover: 6 Month limited warranty * The Jobst Seamless Anti Embolism Elastic Stocking is specifically designed to combat thromboembolism A convenient opening is located on the top of the foot so the patient's skin will never touch the floor