We are so pleased with the Foam Mattress Topper. We have been able to sleep through the night, which was a problem before. It took much longer than 24-48hrs though to get rid of the smell when we first unpacked the topper. Since we had ordered a cover for it, we did not use the topper until its arrival. I could still smell it for a few more days even with the cover on it and solved it by putting two sets of sheets on the top of the cover.