4 Inch Tri-fold Cool Gel Memory Foam Mattress-Twin XLCooling gel infused memory foam regulates temperature for cool sleep Bamboo charcoal foam helps to dissipate odor and freshen the air Breathable jacquard bamboo cover for increased comfort and relaxation 2 layer memory foam mattress gives you high intensity and full body support Medium firm mattress conforms to your body for pressure relief Unfolding the mattress fold 1 or 2 sections for various needs Work great as a portable bed play mat lounger sofa