【Extra Firm Mattress Topper 】: This bed topper is specially designed as an extra firm level. It's highly suitable for people who suffer from back pain/waist pain caused by insufficient spinal support. If you are looking for an extra firm bed topper that perfectly balances comfort and support, this would be the right one for you! 【CertiPUR-US Bed Topper】: CertiPUR-US and Oeko-Tex Standard 100 without harmful substances, and the foam and fabric have been independently safety evaluated to comply. Super healthy. This extra firm mattress pad will give you and your family a great night's sleep. 【High Density Foam】: The 3 inch foam mattress topper is made of high density foam, which is supportive, does not deform, and gives you the "just right" firm. Grey foam efficiently maintains a fresh environment, with no smell, and makes you sleep more comfortably. 【Skin-friendly Cover & Non-Slip】: The foam mattress topper with a breathable and removable cover, is skin-friendly and soft to the touch, allowing you to enjoy a refreshing night's sleep. Non-slip beads and adjustable elastic straps on the cover back ensure a secure fit. Zipper closure for convenient disassembly and washing. 【Warranty】: Please don't hesitate to contact us if you have any problems with the bed mattress topper! It is not only the perfect way to upgrade your bed without having to buy an expensive new mattress, but also improves comfort in guest rooms, dorm rooms, RV, travel, and more occasions.