If your office or desktop is not adjustable in height,this can cause an incorrect posture.When the feet are not properly supported,a footrest is required. Ergonomic fotrests provide a comfortable sitting posture and help prevent back and shoulder complaints. Ergo Health Footrest creates a comfortable and ergonomically correct working position. This ottoman is very stuable and easy to adjust in 4 heights. In addition, the Ergo Health footrest can adjustable angle by gently pressing the feet.