RV Elite Premium Grade Cool Gel Memory Foam Bunk Mattress, 75" X 28" X 6" (Several Premium Cool Gel Memory Foam RV Mattress. The Comfort Top has a 2" layer of Cool Gel Memory Foam. Mattress is built in layers with conforming foam on top and supportive layering on the bottom. The entire mattress is covered with a washable, breathable Polyester fabric. The base layer provides a little extra height needed to get in an out of the bunk. The firm foam base provides extra comfort and stability when seated. 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)