The WaveRest Gel Wrist Rest features GelFlex Comfort Zone, a gel-filled cushion that conforms to your wrists for maximum comfort and support, and a patented Wave design, which promotes proper hand and wrist movement. PRODUCT FEATURES: Unique comfort zone gel-filled cushion conforms to your wrists for maximum comfort and support; Helps avoid injuries, which can lead to repetitive stress disorder; Revolutionary Wave Design promotes proper hand and wrist movement; Lightweight yet durable design guarantees years of use.