Executive mid-back chair features bonded leather cushion and built-in lumbar support. The plastic back and seat shell is upholstered with black leather. Multifunction arms have soft polyurethane pads for comfortable support. Arms adjust in height from 25-3/4" to 29", and the sliding arm pads have four lock positions. Functions include pneumatic seat-height adjustment from 18-1/2" to 21", back-height adjustment, dual-action synchro tilt, 360-degree swivel, tilt and tilt tension. 27-3/5" diameter, five-star nylon base is equipped with 60mm dual-wheel casters with 38mm hoods for easy mobility. Weight capacity is 250 lb. Seat measures 20-1/2" wide x 18-1/2" deep seat. Back size is 18-1/4" wide x 19-3/4" high.