Road Premier Cool Gel Memory Foam Truck Mattress with Plush Quilted Cover, 74" x 36" x 8" (Many This Premium 8" high truck mattress is engineered with 3 layers of foam for optimal comfort and support. The lofted quilt top covers a 2 layer of Cool Gel Memory Foam which creates a total cloud of comfort. The soft middle layer provides additional support and comfort. Firm bottom layer provides extra height, for ease getting in and out of the bunk, and firm seating. Base layer is also cloth covered to prevent shift during motion. Benefits of Cool Gel Memory Foam: Evenly distributes body weight, infused liquid gel for a cooler sleep experience wicks heat away from body, Reduces foam cradling that results in heat build up, Plush, luxurious, consistent feel in all climates, Unbeatable comfort and support plus cooling.. Also contains a medium firm core to promote comfort throughout the mattress. Uniquely designed to last longer than a traditional innerspring mattress All foam is CertiPUR-UScertified which means: Made without ozone depleters, Made without PBDEs, TDCPP or TCEP (Tris) flame retardants, Made without mercury, lead, and other heavy metals, Made without formaldehyde, Made without phthalates regulated by the Consumer Product Safety Commission, Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million)