Powerweb 14in Combo Hand Exerciser Yellow Green Diathermy Deep Heat Units Dimensions: 8 Style:1 Pair (Left & Right) Dimensions: 8 chrome plated brass air release valve with micro threads for precise deflation control Leatherette carrying case with durable nylon zipper Not made with natural rubber latex Assembled inspected and packaged in the U LARGE 14 DIAMETER COMBO Yellow Green * X Light Medium * Black * X Heavy * Flexion extension opposition and supination exercises can be performed using the exercise web * Resistance may be modified by adjusting the hand position depth of finger insertion or by moving to a different resistance (color) web *