High quality materials: 1-inch memory gel and 5-inch thick high-quality basic sponge., our memory foam mattresses , combined with professional knowledge and the best materials, help provide advanced sleep technology. The gel memory foam provides continuous airflow to insure a cool night’s sleep. The skin-friendly fabric improves breathing ability for the gel foam layer. The best layering: 6-inch mattress, 2-layer full foam system. The foam mattress is not too soft or too firm, perfect for all sleeping positions. The top layer supports your weight and maintains your body shape while providing a cooler sleep experience. Professional packaging: Our technology effectively compresses the mattress into a box, making transportation easier into the bedroom; Please open the mattress box within 72 hours after receipt to decompress the mattress. Precautions: Please allow 24-72 hours for your mattress to return to its full shape. The memory foam will expand faster in a warm environment. In cold temperatures, your mattress may take longer to recover from compression to full size. The expansion time of the mattress will vary depending on the surrounding environment. CertiPUR US certification: Our mattress adopts multi-layer decompression foam sponge that meets CertiPUR US requirements. The upper layer is cooling memory gel, which is comfortable and soft. The lower layer is made up of a high-density foam, which embraces your body and lets you sleep with ease.