This Is A 25" W X 25" D X 35-40" H Nylon Black Boss Office Deluxe Posture Chair. When you want an attractive, comfortable office chair that will provide high-quality service for years to come you can count on our Performance Series task chair. Made of long-lasting, easy to clean commercial fabric you can expect your chair to continue to look its best. When performance counts, this task chair provides results. Thick padded seat and back with built-in lumbar support Waterfall seat reduces stress to legs Adjustable back depth Pneumatic seat height adjustment Note : To ensure proper assembly, please follow all steps provided in the Installation manual (provided in pdf below) 5-star nylon base allows smooth movement and stability; Hooded double wheel casters Does not tilt back Ships ready to assemble 275-lb. weight capacity Overall dimensions: 25" W x 25" D x 35-40" H Weight capacity is 250 lbs. Ships ready to assemble Does not tilt back