Molblly Folding Mattress, 3 inch Twin XL Tri-Folding Memory Form Mattress. 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. Portable Mattress - Molblly Memory Foam Tri-Fold Mattresses are the ideal solution for temporary sleeping. Simply unfold the memory foam bed on the floor for a comfortable night's sleep; and it folds down to a compact size after use, allowing you to move this mattress anywhere.