Saatva is one of the fastest growing online mattress company in the country. They manufacture mattresses under the brand Saatva that are sold on their online store - www.saatva.com. The company is based in Connecticut, it comprises 9 factories throughout America, as well as 28 fulfillment centers that deliver our mattresses. Their patented design (coil on coil technology) consists of two coil units, the first one for support with stronger springs and the second one for comfort with softer springs. Foams used are CertiPUR-US® Certified CertiPUR-US® Certified. 15 year limited warranty, with only the first year non-prorated.