remium Memory Foam Mattress: Mattress in a box with premium gel foam+bamboo memory foam, fiberglass-free, 2 sides design cover, and medium firm to extra firm for back pain, low motion transfer. Experience the luxury of high-quality mattresses, and enjoy a deep and restful sleep experience.Medium Firm to Extra Firm Optional: Our updated medium firm to extra firm mattress is more breathable and not collapsing than a traditional topper, changing the foam side can meet your firmness needs. If you are looking for a mattress that perfectly balances comfort and support, this would be the right one for you.Fiberglass-free Cover：Our gel mattress features a skin-friendly fabric, fiberglass-free, NO SMELL, making you enjoy a safe deep sleep without stress. One side is in white soft fabric, and the other side has stylish grey fabric. Choose the cover of the mattress according to your mood.