Ergonomic wrist rest helps to support your wrist while using your mouse or typing - Compact and portable - Modern disc-shaped design just 3.8" (9.6 cm) in diameter- Ideal office accessory for your laptop or desktop computer - Sliding wrist rest provides more mobility than a static product like a mouse pad wrist rest or mouse hand rest - The desk wrist pad has a contoured top with silver fabric that cradles your wrist like a wrist pillow - Bottom surface helps protect your desk from scratches.