[Skin Friendly Fabric] Full mattress is used of multi-layer foam design, full size mattress in a box can help to enhance air circulation and dissipate body heat, creating a cool sleeping environment [Full Mattress in a Box] This mattress full size is compressed into a sturdy plastic bag and protected with a hard cardboard box [Medium Firm] Full size memory foam mattress are made of high-density foam and gel process, such materials and craftsmanship can make lying down more comfortable