BOP1312 Features: * Contemporary ergonomic mesh back designed to provide exceptional back support and to prevent body heat and moisture build - up * Ratchet back with active lumbar support * Height and width Adjustable arms * 3 Paddle multi - function tilting mechanism * Allows Seat and back to be independently adjusted and locked in any position * Seat Tilt lock allows Seat to lock throughout tilt range * Adjustable Tilt tension control * Pneumatic gas lift seat height adjustment * Easy to clean upholstery Dimensions: * Overall dimensions: 37.5 - 40.5"" H x 27"" W x 27"" D