Arm-Stand the strong and durable aluminum alloy material can support a weight of 11kgs (or 24 LBS) and effectively lighten 90% of the weight of your wrists. Ergonomic Design with unique ergonomic design, you can now move freely. It is adaptable for right-handed or left-handed users with 180° adjustable ball attachment, convenient to use at home or in the office. You can play or work comfortably for hours. Correct sitting posture you can adjust it according to your will to the most comfortable .