The package contains only one hand rest Material and SizeMade of ABS and silicone bumper. The padded memory foam adheres firmly to the surface and is very comfortable, durable and soft. Dimensions: 11.42 x 5.51 inches. Easy to install 1. Attach the clamp and tighten the screws. 2. Attach the card to the clip. 3. Installation is complete. 4. Comfortable to use. 180 Rotation This computer armrest can be adjusted by yourself. Although you don't need to use it. Simply place this parallel cord on your desk so it doesn't take up space. It looks neat and very useful. Elbow Pressure ReliefRelease neck and wrist pressure while working and playing. Reduce your fatigue and pain. Effectively help to promote blood circulation. [Necessary for office and home] Suitable for long-term office work, computers, keyboards, sleeping pads, daily use at home. home, office games and entertainment etc. Provides a soft and warm touch for your elbows and wrists all the time.