This Mesh Tilt Task Chair comes with an open breathable mesh fabric that will keep you cool and comfortable during extended periods of work. The contoured 4-inch high-density foam seat cushion provides added comfort. The height-adjustable arms provide comfortable and versatile armrests that can suit your personal preferences. The synchro-tilt mechanism moves the back and seat in unison at a 2:1 ratio and locks in any position throughout the tilt range. The adjustable tilt tension control allows you to customize the optimal angle at which you sit. The pneumatic adjustable gas lift allows for easy seat height adjustment, to help you find the personalized sitting style that suits you and your work environment. The large 27-inch black nylon base provides added stability to the chair. The hooded double wheel casters make it easy to move and shift directions.