Urban Ladder Eisner Low Back Study-Office Computer Chair(Black) A study in simple. The Eisner study chair has a firm foam cushion, which makes long hours at your desk comfortable. The flexible meshed back is designed for air-circulation and support when you lean back. The curved arms provide ergonomic forearm support. Adjust the height using the gas lift to find that comfortable position and the nylon castors make it easy to move around your space. Chrome legs refer to the images for dimension details any assembly required will be done by the UL team at the time of delivery indoor use only.