ProCare® Knee Support, 2X Large, 1 Each Slings Adaptive convex with integrated flexlines Bell Horn 18mmHg AntiEm Adaptive convex with integrated flexlines for a unique combination of stability and flexibility HIGH PROFILE 4 HIGH * 16 x 18 * Customized fit through the simple push of a knob * The revolutionary ISOFLO© Memory ControlTM offers shape fitting capabilities while the user is seated allowing quick and easy on demand adjustment to maximize function * The QUADTRO SELECT Cushion allows for quick simple position selection for every user while seated * Stability is enhanced by locking the air into place in each of the four quadrants * Easy to handle and carry at just 3 Extra length pad at the knee offers localized heat retention Extra extra large: 25½ – 28 inch circumference