The Wolf family has been making mattresses in America"s heartland for over 137 years and five generations. The super sleep was designed and built by the founder"s Great Grandson. This mattress contains Wolf"s premium cotton blend made using 100-percent American grown cotton. Using cotton instead of foam helps the mattress to breath, and in turn helps to regulate body temperature during the night. Natural un-bleached cotton is a material containing no dyes. Also the Premium American Steel coil is constructed using tempered steel construction. Inner quilting the cotton before attaching it to the spring unit ensures durability and continued support. The mattress is rolled in plastic and boxed for protection during shipment; the small size of the package is also helpful when moving it into your home by making tight spaces easy to navigate. Product contains a 1 year warranty. Wolf Sweet Dreams Since 1873.