Medium Firm pee proof foam mattress premium lumbar support ,waterproof mattress,outdoor daybed,medical bed mattress ,Waterproof mattress Multi-layered, medium-firm, high-density foam that is weatherproofenhances blood flow, lowers pressure, and produces a cool sleeping environment. The bottom cover of this pad is made of triple laminate vinyl, which makes it fire and fluid resistant. combines two requirements in the ideal way, offering a firm mattress with exceptional comfort