Keep cool with the Alvin Zephyr Manager's Office Chair CH770. The stylish pierced plastic back is made of high-grade black polypropylene and maintains air circulation around your back, keeping you fresh and comfortable. This manager's chair has an adjustable rocking system that synchronizes the back and seat in a 2 to 1 ratio-- for every 2° the back inclines, the seat will tilt 1°. You can also lock the seat in the upright position. The back rest is depth adjustable, allowing you to get just the right fit for you. This office chair has pneumatic height control with an adjustable seat height of 19" to 24". You can rest your arms on the height and width adjustable padded armrests with 7 available positions.
The contoured seat is upholstered in black fabric and 3½ inches thick, cradling you in comfort (the molded foam seat cushion is 20"L x 19"W x 3½"H). The back rest is 20"W x 20"H. The 5-arm base is 26" in diameter, made of reinforced nylon, and moves easily on 5 swiveling wheels.