[Material and Size]Made of ABS and silicone cushion pad. padded memory foam attaches firmly to the surface,Feels very comfortable, durable and soft. Size: 11.42x5.51 inches. [Easy to install]1.Fix the clamp and tighten the screw. 2.Fix the card to the clamp. 3.Installation complete. 4. use comfortably. [180° Rotation]This computer armrest can be adjusted by yourself. Although you don't need to use it. Just set this parallel on the table so it doesn't take up your space. Look tidy and very useful. [Relieve Elbow Pressure]Release your neck and wrist pressure while you work and entertain. Relieve your fatigue and pain. help to effectively promote blood circulation. [Office and Home Necessary]Suitable for long hours working in the office, computer, keyboard, sleeping mat, daily home use, office game entertainment, etc. Provide a soft and warm touch for your elbow and wrist all the time. Product description Made of high quality ABS material with padded memory foam, the sturdy clamp fits desks up to 60mm/2.4， Comfortable, the non-slip fabric on the surface contains memory foam material, it is very comfortable to use in summer and winter. Mouse pad with rotatable desk arm stand, Space saving for desks, Platform rotates 180 degrees to hide it under desk, Easy to use at multiple angles and can be rotated under desk when 'it is not used. Ergonomic Elbow Support for Desk Hands Shoulder Protect Armrest Adjustable Swivel Mouse Pad for Desk Easy to fix: with the screw clamp, it can be installed without any tools. Armrest for work/study, reduces arm pressure and eliminates muscle tension in the neck, arms and shoulders. Better to use both together Can be used on a stool Use on the table Adjust the angle as desired