12/14 inch Memory Foam Mattress for Back Pain, Cooling Copper Gel Bed in a Box, Foam Made in USA, CertiPUR-US Certified, Therapeutic Medium FirmStress Relieving Structure The NISIEN memory foam mattress features a 3 layer foam structure for optimal comfort: a 2" temperature regulating comfort foam, a 3" pressure relieving convoluted foam, and a 7" high density supportive base foam. These layers collaborate to reduce pressure points and provide stable support, ensuring a restful and rejuvenating sleep experience. Breathable Comfort Design Equipped with a high quality breathable fabric cover,