Task Stool without Arms Engineered to make personal positioning easy, so you're more comfortable and productive. Back and seat angle adjust simultaneously to cradle your back for day long comfort. Pneumatic 24 to 29" seat height adjustment to ensure that your feet and legs are properly supported with the 7-1/2 to 11"H adjustable chrome footrest. Generous sized seat has extra thick 3-1/2" padding covered in durable 100% acrylic upholstery. Waterfall contoured design helps to reduce stress on knees and ensures proper circulation. Contoured back provides lumbar support and encourages proper posture. Polypropylene steel reinforced base with 2" dual wheel carpet casters. Task Stool seat 18" sq., back 17-1/2" sq. Easy assembly. 1 Year Limited Warranty. Also available, optional stool glides can replace casters for stationary use. 250 lbs weight capacity.