Purchased this foam mattress topper after reading the reviews and comparing prices. We have a sleep by number bed which is very firm and wanted to add some cushion to provide a more comfortable nights rest. The product came in a timely manner, wrapped tightly in clear plastic wrap. We took great care in unwrapping the clear plastic wrap and unfolding the foam topper. The foam topper was in perfect condition and had no offensive smell. The foam topper is only 1"thick, so the mattress pad and fitted sheets still fit fine over the bed. The topper is made out of a viscous foam which is very dense and provides a nice cushion without feeling like you are sinking into the bed. Since it has been on the bed, our comfort level at night has greatly improved. It was reasonably priced and worth every penny. Thank you O!