CONFORMAX Gel Office Seat Cushion (L18, AIRMAX-BLACK)+ FREE!!! ULTRAGEL ANYWHERE, ANYTIME Personal Comfort Gel (3.5X4.5) MADE IN THE USA. Proprietary CONFORMAX gel-foam technology means better comfort than gel or foam alone. For many, the most comfortable gel seat cushion available. Low-profile comfort. Only 1.5 in. thick with  of Ultrasoft viscoelastic Ultragel gel cast directly onto one inch of Ultravis foam guarantees perfect body-conforming fit to the users anatomy ensuring all day, pain free sitting comfort. Durable, handsome removable zippered covers, with conformable top surface and non-slip friction grip bottom ensure maximum comfort while preventing sliding on most surfaces. IMPORTANT NOTE: CONFORMAX cushions with the Standard covers are our softest cushions. AIRMAX cushions will be firmer, but will result in a ventilated, cooler, extended sitting experience. Covers are water and spill-proof for easy cleaning. Color Black, safe for washing. Air dry recommended.