add a layer of comfort to your rv mattress inside your rv highest quality nylon jersey knit cover with mesh gusset 17" thick serene foam superior sleep products ter the performance foam is the most advanced foam on the market and is not temperature sensitive so sleep better of angel soft" gel fiber fill and 2" isotonic® memory foam with isofresh odor 2" angel soft" fiber 2" memory foam the recreational solutions ultra mattress pad is a hypoallergenic and breathable rejuvenate your tired mattress and add an extra level of comfort reg the traveling solutions waterproof mattress protector is a hypoallergenic removable zipper with a waterproof barrier that protects your bed from spills