SkiL-Care™ Gel-Foam Cushion is great for geri chairs, wheelchairs and standard chairs. Bottom chamber contains resilient foam that prevents bottoming out. The gel-filled top chamber evenly distributes weight to relieve pressure. Gel and foam are separated. Sealed in incontinence-proof vinyl. Washable polyester cloth outer cover with ties. Meets CAL 117B. Replacement guaranteed for one full year. 2-1/2"H.