Everlast Chair lets you work comfortably in even the toughest work environments. Pneumatic, non-tilt adjustment allows you to alter both seat height and back depth. Height settings from 21" to 31" ensure people of most heights can work comfortably and ergonomically. Contours and waterfall seat improve lower-body circulation and encourage proper spine alignment. Conveniently placed handle helps when relocating work spaces. Along the office chair's base cylinder, a threaded knob adjusts the chrome footring's height from 6.5" to 16.5". Sturdy, mushroom-glide feet and nylon base support up to 300 lb. to ensure stability at any height setting. Seat size is 18.5" wide x 17" deep. Back measures 16.5" wide x 12.5" high.