Full Size Extra Firm Mattress, 4 Inch Memory Foam Mattress, Cooling Gel Bamboo Charcoal Mattress for Pain Relief, High Density Firm Mattress with Removable Cover, Certified in the USA.

【Firm to Extra Firm Optional Firmness】: This 2 sides firmness REVERSIBLE topper is specially designed as a firm to 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 a (extra) firm mattress topper that perfectly balances comfort and support, this would be the right one for you!【Upgraded 2-Layer Design】: The 4 inch memory foam mattress topper features 1" cooling ventilated gel memory foam and 3" high-density bamboo-infused memory foam, which is more supportive than 3 inch mattress topper, does not deform, and gives you the "just right" firm. Bamboo charcoal memory foam efficiently maintains a fresh environment, with no smell.【CertiPUR-US Bed Topper】: CertiPUR-US and Oeko-Tex Standard 100 without harmful substances, and the memory foam and fabric have been independently safety evaluated to comply. Super healthy. This extra firm mattress topper will give you and your family a great night’s sleep.【Skin-friendly Bamboo Cover & Non-Slip】: The foam mattress topper with a breathable bamboo fiber 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】: Lifetime warranty! Please don't hesitate to contact us if you have any problems with the cooling gel foam 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.