Jobst Ultrasheer 20 30 CT Knee Hi Natural Large (pair) Patient Chairs Intelligent Device Debugging Jobst for Men 20 30 Knee High Intelligent Device Debugging 20 X 18 * The contoured design combined with the simple operation of the ISOFLO© Memory Control unit offers provides a new level of postural control and stability that has never been achieved in an air cushion * The contoured design positions the pelvis back in the wheelchair and centers the individual comfortably in the middle of cushion * The ISOFLO Memory Control unit locks air into each of the four compartments providing stability by minimizing side to side and front to back motion * Adjustable to individual Knee Hi * Classic Black * 20 30 mmHg * Large * Ankle Circ 10 113 8 Calf Circumference 12 1 2 18 1 8 * Beautifully sheer hosiery Durable long lasting * Sandalfoot styling * Gradient compression for relief and prevention of venous disease * Therapeutically effective sheer lightweight and fashionable *