Ergonomic Chair Tilt controls for optimal positioning change your chair's positioning with the touch of a finger! Synchro tilt reclines the backrest increasing the angle between your torso and thighs for a comfortable, ergonomic sitting position. Once you find your best position, Use the tilt lock function to stay in place Durable wheel casters for easy mobility The heavy duty nylon base offers strength and stability, while the oversized carpet casters allow for smooth rolling across virtually any floor. Thick, contoured cushioning provides comfort and support comfortable mesh seat has contoured padding that gently positions your body for the healthiest posture. Cushioning is designed to provide ideal support, reducing muscle strain and fatigueso you feel energetic and focused even after hours of sitting. Pneumatic 1-touch seat-height adjustment for proper posture you can raise or lower your seat with hardly any effort using the pneumatic seat-height adjustment. Sit with your feet resting flat on the floor for correct ergonomic positioning. You can even adjust the height of the head rest for even more customized comfort. Height-adjustable armrests help relieve shoulder strain reduce undue stress on your neck and shoulders thanks to the comfortable armrests. Adjust higher or lower to best fit your body and posture.