Dr. Office High Back Ergonomic Office Chair Executive Desk Chair with Headrest and Ajustable Armrest(Black) 360swivel ajustable high back ergonomic mesh home & office chair, designed to provide exceptional back support and to prevent body heat and moisture build up. &bull;Seat Size: W19 x D19 x T2.6 inch / (W48 x D48 x T7cm) ; &bull;Backrest Size: W18 x H21 inch / (W46 x H53 cm) Adjustable tilt tension ,seat height and armrest.Mesh seat and premium fabric upholstery to eliminates leg fatigue. Max capacity: 300 pounds(high quality sturdy nylon base and 360 swivel PU casters ), Easy assembly upon arrival.Dr.Office offers a 30 days no questions asked money back guarantee;