The ideal task chair for all-day seating comfort and perfect in any office. Great in tight workspaces. Breathable mesh back is height adjustable. Durable premium fabric upholstery designed to resist abrasions and fading. Waterfall seat edge helps relieve pressure points at the back of the knee. Five-star base with casters for easy mobility. Optional arms sold separately. (ALEIN49AKA10B and ALEIN49AKB10B). UPC: 042167393212 UPC: 042167393212. No returns.