The SPAN UltraMax Foam Geo-Mattress features a 500 lb. weight capacity and 3-dimensional zoning with more than 800 articulating foam cells for maximum comfort and pressure distribution. Shear Transfer Zone design prevents high pressure areas such as the scapula, sacrum, and heels from digging into the surface of the mattress. The Heel Slope™ is designed to further decrease pressure on the heels. Mattress available in 36″ or 42″ widths.