The I-Spire Series Wrist Rocker features an elliptical design that offers a smooth, effortless rocking motion for enhanced mousing comfort and provides a soft, cool place for your wrist. Patent pending design. Easy to clean. Look for coordinating I-Spire Series products from Fellowes. Wrist Filling Material: Silicone Rubber; Mouse Pad/Wrist Rest Type: Mouse Pad/Wrist Rest; Color(s): Gray; Theme: Solid Color.