Ergonomic Office Desk Chair with Rocking Backrest and Height-adjustable Padded Seat-Gray 47815269 Battery life: 15-21 days

Battery life: 15-21 days

as well as pleasant to look at

Material: polyester + spandex

comfortable ergonomics

and Casmeran

Ergonomic Office Desk Chair with Rocking Backrest and Height-adjustable Padded Seat-Gray 47815269 Battery life: 15-21 days19" 22. 5" adjustable seat height to fit people of different heights Pull out the lever for unlocking Tension adjustment knob (tight & loose) to adjust the backrest angle S shaped backrest fits your body curve back support 90 105 rocking function for fatigue relief Premium leathaire oxford fabric and soft sponge for long lasting comfort Supports up to 330 lbs with 5 claw base and gas lift 5 rolling casters make it easy to move around Additional back