Adjustable footrest increases comfort by placing you in an ergonomically correct position to avoid back, neck and leg strain and fatigue, which can lead to pain and discomfort. Use your feet to control the tilt angle adjustment on the platform. Manually adjust the height adjustment up to 3/4". Fully adjustable footrest also features a contoured nonskid foot platform for maximum comfort. Durable, heavy-duty steel base stays in place.