Whether you’re taking this topper on the road, or refreshing an old or uncomfortable mattress, this 3-inch memory foam mattress topper features our proprietary TEMPUR Material, so you get the same pressure-relieving comfort and support found in our mattresses. Features a removeable, machine-washable cover and 3-inch thickness for ultimate comfort. You may notice a “new product smell” at first. As with most new purchases, this is normal and will dissipate in a couple of weeks. Do NOT wash or dry clean the TEMPUR-Topper Supreme™. The cover can be removed and washed in cold water, dried on a cool setting or air drying which is recommended. Do NOT use chlorine products or harsh stain removers.