Enjoy customized comfort in this mid-back mesh task chair. Breathable mesh seat and back conform to your body. Comfort functions include pneumatic seat-height adjustment from 17-3/4" to 21-5/8", 360-degree swivel, tilt, simple synchro tilt and tilt lock. Armrests flip up and out of your way for more versatility. 13-4/5" nylon base is equipped with 1-24/25" hooded, dual-wheel casters for easy chair movement. Seat measures 20-1/8" wide x 18-1/8" deep. Back size is 18-1/4" wide x 17-3/8" high.