This vinyl upholstered office chair is a great option for your office or home. Mid-back office chairs are the logical choice for performing an array of tasks. High back office chairs have backs extending to the upper back for greater support. The high back design relieves tension in the lower back, preventing long term strain. The waterfall front seat edge removes pressure from the lower legs and improves circulation. Chair easily swivels 360 degrees to get the maximum use of your workspace without strain. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. H8021-GG Color Black Finish Black Nylon Upholstery Black Vinyl Made of Foam, Metal, Plastic, Vinyl Contemporary Office Chair High Back Design Black Vinyl Upholstery Two-Piece Cushion Tilt Lock Mechanism Tilt Tension Adjustment Knob Waterfall Seat promotes healthy blood flow Swivel Seat Pneumatic Seat Height Adjustment Nylon Arms Heavy Duty Nylon Base Dual Wheel Casters CA117 Fire Retardant Foam Capacity 250 lbs. Some Assembly Required Warranty Info 2 yr Parts Overall Dimensions 25 W x 26 D x 41.25 45 H Seat Dimensions 20 W x 19.50 D Back Dimensions 20 W x 26 H Seat Height 17 21 H Arm Height from Floor 24 28 H