Polyurethane, Foam, Metal The Martha Stewart Ivy Office Chair introduces linear elegance to your work space This chic desk chair is upholstered in black faux leather with polished brass frame and features a sleek armless design 360° Swivel seat with pneumatic height adjustment, tilt lock, tilt tension, and built-in lumbar support provides a custom seating experience Assembly and Care Instructions: Quick and easy assembly with included tools and wipes clean with damp cloth Dimensions - 19"W x 21.25"D x 37.5"H; Seat Size: 19"W x 18"D x 21.5"H; Back Size: 17.75"W x 17.75"H; Maximum Static Weight Capacity: 300LBS