1)Mesh chair Size: W23" x D21" x H39"

2)Seat Height: 18"~21";

3)Good backrest and wide enough to support shoulders

4)Chair's seat allow 1"-4" of space between edge of chair and human knees

5) Durable nylon base, 5 wheels

6)Breathable Black (or color) mesh back .

7)Seat upholstered in Black (or color) mesh fabric.

8)Stylish "T" arm with smooth lineament.

9)Synchronized seat and back control, and tension control. Pneumatic seat height adjustment