Luxors Ergonomic Gel Chair Cushion / Coccyx Cushion delivers supreme comfort and support to help ensure long hours of pain-free work at your desk. Before designing this premium-quality gel seat cushion, we took a good look at common consumer complaints of leading competitors. Among them were insufficient size, flimsy and unsupportive padding, square shapes that cause discomfort and circulation problems in the lower legs, and unpleasant odors common to plastic and rubber. Weve addressed these issues with ergonomic contours and a supportive, odor-free, TPE gel core. Then we upped the ante with a coccyx cutout, a waterfall front to relieve pressure behind the knees, a honeycomb cell structure for cooling airflow, and a breathable, removable mesh cover thats washable. The result is a plush cushion that will make any office chair feel luxurious.