Daniel Haynes of Sealy, Texas, started this company in 1881 when he was asked to provide a mattress filled with cotton. The company was sold to a Texas company 15 years later, which retained the brand name of Sealy. By 1920, this company had grown into 23 licensed plants all over the country. Today, Sealy owns 25 bedding plants in the U.S., one of which is producing its own latex -- this is a first in the mattress industry. Sealy is one of the companies that sustained itself and even made a profit during the Great Depression.
A group of manufacturers joined to form an independent legal entity in 1931 so they could compete against the best player in the field and make better profits. In 1933, this group was named Serta, and put together a set of national guidelines that would govern every product manufactured under the brand name. Today, Serta consists of 23 manufacturing units within the U.S., four in Canada and another 23 all over the globe. The company is headquartered at Hoffman Estates, Illinois.
The Sertapedic has 504 coils, is made of poly foam, offers no relief zones, comes with a five-year warranty and costs $700 as of May 2011. On the other hand, the Posturepedic has 782 coils, is made of memory foam, offers three relief zones, has a 10-year warranty and costs $900 as of May 2011.
To count the similarities first, both mattresses are tight top and 12 inches high. In contrast, the Sertapedic comes with 504 coils, has poly foam material, has no relief zones, offers a five-year warranty and comes with a price tag of $700 as of May 2011, while the Posturepedic has 782 coils, is made of memory foam, has three relief zones, comes with a 10-year warranty and has a price tag of $900 as of May 2011.
The common factors are the comfort and height -- pillow top (a mattress with extra cushioned layers, as soft as a pillow, added to the top for a soft feel with all the support of a mattress) and 13 inches high. The Sertapedic comes with 504 coils, is made of poly foam, has no relief zones, comes with a three-year warranty and is priced at $600 as of May 2011. On the other hand, the Posturepedic has 782 coils, is made of memory foam, has three relief zones, has a 10-year warranty and costs $900 as of May 2011.