Memory Foam and Inner Spring Hybrid Design: The 14-inch composite mattress is combined with multiple layers of memory foam and high-strength springs to achieve the best balance of firmness and softness Multiple pressure points, can effectively relieve back and neck pain, can meet Anyone in any sleeping position. The inner spring works independently, effectively reducing the sound during sleep, and is believed to provide you with a deep and peaceful sleep. (Buy 1 mattress, get 2 pillows!)Double-sided use in one mattress: Dual-use in one, giving you more options, and each mattress comes with a 10-year limited warranty that greatly increases the durability of your mattress.Stay cool heat dissipation : Composed of Cool Gel AeroFusion memory foam and breathable fabric, it adapts to ambient temperature to keep warm in winter and cool in summer, helping to dissipate body heat and help you achieve deep sleep,Fiberglass-Free FR Inner Cover: Meets the highest industry requirements and meets all regulations set by CertiPUR-US, no fiberglass effectively avoids skin irritation or breathing problems. And a flame retardant layer is added inside to protect the safety of you and your family.Mattress in a Box: For convenience, this mattress is professionally compressed, rolled up and shipped in a compact box. For a better sleep experience, all you need to do is unpack, cut open, and wait 48-72 hours for the mattress to fully unfold.