Premium Folding Mattress - Molblly high-quality memory foam mattresses feature skin-friendly fabrics; high-quality memory foam and strong support cotton, which allow you to enjoy a great sleep wherever you go. Double layer perfect structure - The Molblly 3" Trifold Mattress is constructed of 1" gel memory foam and 2" high density support foam. The memory foam fits your body perfectly for a softer sleep, and the high-density support foam makes the mattress more supportive. Strong Support - This new tri-fold mattress uses support foam that is 30% denser than the previous generation. This upgraded support foam will keep the mattress from collapsing, provides perfect support for your body and create medium-firm feel.