Has your mattress been needing a refresh? The Mainstays 1 ? inch 7-Zone Foam Mattress Topper is just what you need to achieve the sleep of your dreams. This topper features 7 zones of support that work with your body to offer pressure point relief where it s needed the most. This conventional polyurethane foam topper is designed with numerous channels that allow air to move freely and reduce heat buildup while you sleep. The Mainstays 1 ? inch 7-zone foam mattress topper is also treated with antimicrobial technology to keep the polyurethane foam fresher and cleaner by inhibiting the growth of odor and stain-causing mold and mildew. This topper has everything your mattress has been missing and so much more. Wake feeling refreshed every day with the Mainstays 1 ? inch 7-Zone Foam Mattress Topper. Foam proudly poured in the U.S.