【Ultimate Memory Foam Mattress in a Box】: Crafted with a premium removable cover and CertiPUR-US certified memory foam infused with cooling green tea gel. It contours to your body for personalized pressure relief, maintains a cool sleep surface all night, and strikes the perfect balance of luxury and functionality for any living space. 【Extra Firm Mattress】: This foam mattress is specially designed for an extra firm firmness level. It's ideal for people who suffer from back pain/waist pain caused by inadequate spinal support. If you are looking for an extra firm mattress that perfectly balances comfort and spinal support, this is the one for you! 【Two-Sided Reversible Design】: Unlike ordinary single-sided mattresses, ours features two comfort levels in one. Simply flip it to select: the white medium firm side for snug contouring, or the grey extra firm supportive side for enhanced back and spinal alignment. 【Fiberglass-Free & CertiPUR-US】: Meets both CertiPUR-US and OEKO-TEX Standard 100 standards for safe content and emissions. No harmful chemicals, no off-gassing odor—just clean, healthy sleep for you and your family. Our upgraded silky-soft cover is breathable, cool to the touch, and completely fiberglass-free. 【Easy Setup & Lifetime Warranty】: Arrives compressed in a box. Just unbox, unroll, and let it expand to full size in 24-48 hours. Backed by our lifetime warranty, it’s the worry-free upgrade for your bedroom, guest room, or even floor sleeping. Here’s to better sleep, every single night.