Mesh High Back Knee-Tilter The breathable mesh back promotes airflow and comfort while gently supporting the natural curve of the spine to reduce fatigue. Other features include polished aluminum arms, soft urethane arm caps, pneumatic seat height adjustment, tilt-tension adjustment and multiple position tilt control lock. Breathable black mesh back. Durable urethane armcaps are soft and warm to the touch. Tilt-tension adjustment and multiple position tilt-lock control. Also available - 2676LM-2, seat upholstered in LEATHER or LEATHER/ MOCK LEATHER combination with additional stitch details. *Also available in fully upholstered fabric, vinyl and leather models.