ProperAV Two Tier Worktop Stand Up Desk Converter with Gas Spring Lift & Variable Height Settings - BlackThe ProperAV Two Tier Worktop Stand Up Desk Converter with Gas Spring Lift & Variable Height Settings is made of eco friendly particleboard and features step less height adjustment with the assistance of a gas spring strut. The non skid silicone pads protect your work surface from scratches or scuffs. There's also plenty of room for your keyboard and mouse, thanks to the keyboard tray which was designed specifically to protect your elbows. Main Work