Editor's Note(s): Sealy also owns Stearns & Foster and Bassett. Additional Information Sealy Description: Sealy is a large mattress manufacturer founded in 1881 that is based in Trinity, NC in the United States. It’s now part of Tempur-Sealy Intl., the largest mattress maker in the world. October 30, 2020. Warranty: Sealy offers a 10-year warranty for all mattresses… Trial Period and Guarantee:Sealy mattresses are available through third-party retailers. Sealy mattresses are available at Sears, Macy's, Ashley Furniture, Ethan Allen, along with many other mattress … Sealy Posturepedic Optimum Inspiration Gel Memory Foam Mattress. Sealy Mattress Warranty. Sealy has been a leading mattress company for decades and its founding goes back to 1881 in – you guessed it - Sealy, Texas. Just like almost every Sealy mattress presented here this mattress represents the Posturepedic product line. Sealy mattresses thicker than 8 inches come with a 10-year warranty. You need to use a firm, solid foundation, one that can hold you and the mattress… For this reason, customers should defer to the sleep trial and return policy of the brick-and-mortar location where they purchase their mattress. But unlike so many Sealy mattresses in this review, the mattress … It applies to the original mattress owner only. Sealy Mattress Reviews. Sealy's Posturepedic mattresses cost between $399 and $1,999 for a queen-size bed. Sealy mattress …