Boss Office Products B6808-HR Professional Managers Mesh Chair with Leather Seat and Headrest in Black Thick padded contoured seat and air mesh back with built-in lumbar support; Includes Headrest 2 to 1 synchro tilt mechanism with adjustable tilt tension control; Pneumatic gas list seat height adjustment LeatherPlus seat with ample padding; Adjustable height armrests with soft polyurethane pads Seat tilt lock allows the seat to lock in the upright position; Padded back frame Large 27" nylon base for greater stability; Hooded double wheel casters