Three pivot points and two adjustable hinges can be fine-tuned for horizontal and vertical adjustments to achieve ergonomic comfort. Strong aluminium alloy material construction provides durability, flexibility and adjustability, supporting up to 10kgs (or 22lbs). Effectively relieves up to 90% of the weight undertaken by your wrist; also reduces stress from cervical vertebrae, shoulder and arm. Keep correct posture, avoid cervical vertebrae ache and nearsightedness. Uniquely design makes your hand move freely, comfortably and effortlessly to work on your computer. Fits desk top up to 60mm thick.