1. Mouse tray chair armrest with memory foam adjustable armrest, memory foam wrist rest protects your hands. Mouse pad accessories for office/home chairs can be used to extend or strengthen the arm to support the mouse platform, mouse armrest accessories for chairs can relieve pressure on the neck, shoulders, arms and wrists. Memory foam pad, solid aluminum alloy slider, height adjustment, metal slide plate, aluminum alloy decorative parts, magic belt. 2. Office chair armrest extender, length and width increase armrest pad accessories tied to the chair elbow support, office chair armrest chair mouse tray, high-quality structure: our armrest extension is made of high-quality materials, the plastic upper and lower covers are made of durable plastic ABS, and the bracket is made of tough special materials. The soft and carefully padded design ensures comfort and support for your arms, strong support, relieve arm pressure and improve work efficiency. 3. Height adjustment computer chair armrest tray, the adjustable armrest height is flush with the desktop, supporting the elbow, not a simple increase, but a more comfortable care, relax the arm, support the elbow, relieve joint pressure, and the height can be adjusted according to different needs. 4. Easy to install chair armrest mouse pad, no tools required, hassle-free! Installing our armrest chair pad is very simple, just put it on the chair armrest, Velcro fasten, and it can be easily removed. - No drilling, glue or tape required. Package Included: 1 armrest pad only, not sold in pairs. If you need to buy in pairs, please select quantity "2", thank you.