Fully adjustable unit saves space and offers good support while you work! To adjust height and tilt, loosen single knob to reposition keyboard manager, hold in place, then retighten knob to lock in position. Product contains 100% recycled materials. Keyboard tray swivels to the left or right and swings back underneath work surface for storage. Sliding arm lets you pull keyboard tray closer to you for ease of use. Mouse tray mounts to right or left side of keyboard tray. Both keyboard tray and mouse tray include soothing memory foam wrist supports for added comfort.