●This arm rest support suitable for desktop up to 1.9"(5cm) thick, convenient to use from home to office, desk to chair. ●Surface Made of ABS material with padded memory foam, comfortable and durable, minimizes your wrist and shoulder strain. ●This computer armrest reduces arm pressure and eliminates the muscles tension in the neck, arms and shoulders. ●Ergonomic human engineering design, fully 180° rotating, you can choose the most comfortable angle for yourself, protect wrist commendably. ●Easy to install without assembly. Size: 11.4"*5.5"*0.8", weight: 0.55lb. 2 packs will relax your arms, shoulders better.