Memory Foam Kidz Full-Size 8-Inch Memory Foam Youth Mattress with Waterproof Cover, Blue 100-percent visco elastic memory foam full-size mattress. 8-Inch thick mattress with waterproof cover. Luxuriously soft yet supportive. Hypoallergenic, mite-proof, anti-microbial. Complies to flammability standard CFR 1633.