Niche Harrison Swivel Chair- Black Breathable and adjustable mesh back provides lumbar support and accommodates most users Comfortable mesh-covered black seat Curved armrests top the heavy-duty frame and complete the comfort of this chair Functions: 360 degree swivel, seat height, back flex, tilt tension Seat Height: 18-23-inches from floor, Seat Dimensions: 18.5-inches wide x 18-inches deep