LANGRIA Essential Plush High Density Memory Foam Mattress Dual Layer, Stereoscopic, Hypoallergenic Bamboo Cover, CertiPUR-US Certified (10-inch King) COMFORT LAYERS: two layers of foam are covered by a fire retardant inner cover, all wrapped with a soft to the touch outer cover ECO-FRIENDLY: its qualified with the CertiPUR-US certificate for safe materials, environmentally-friendly and high performance. Its free from harmful chemicals with less than 0.5 parts/million VOC emission PRESSURE POINTS RELIEF: the inner 3-inch high density memory foam conforms to your unique body and provides equal weight distribution that prevents any uncomfortable pressure points along your neck, shoulder, back and hips NON-SLIP BOTTOM: a non-slip fabric bottom layer ensures that your mattress will not move about during use, and will prevent any bed sheets from coming off the mattress WARM TIPS: Mattress is 100% new and comes compressed for smart shipping; there may be a natural fresh scent that will dissipate within 24-72h; please also wait for up to 24 hours to allow it fully expand