Enjoy reliable comfort with the Modway Relax 4” Twin XL Tri-Fold Mattress Topper. Complete with a .5” top layer of memory foam, 3.5” of responsive foam, and an ultra-soft removable cover with a non-slip bottom, Relax delivers sound sleep by night and a seating area by day. Unfold Relax in the living room as a play mattress, prop up against the wall to use as an extra lounge chair, or take with your as a portable mattress while camping or traveling. Relax is CertiPUR-US certified by accredited independent testing laboratories, so you can be confident that the memory foam is made without formaldehyde, ozone depleters, mercury, and other heavy metals including PBDEs, TDCPP or TCEP (”Tris”) flame retardants, and is low on VOC. The Relax Twin XL folding mattress comes vacuum-packed and rolled to fit into an easily portable box. It takes 2 to 4 hours for Relax to expand most of the way and a day to expand fully. Relax is a firm tri-fold mattress that delivers comfortable support while accommodating the needs of guests, dorm room friends, and family fun activities.