RV foam sets are designed to provide comfort and support for RV beds. They typically include a mattress topper, a mattress pad, and a mattress protector. The mattress topper is usually made of memory foam or latex foam and provides extra cushioning and support. The mattress pad is usually made of a quilted material and helps to protect the mattress from dirt and dust. The mattress protector is usually made of a waterproof material and helps to keep the mattress clean and dry.