Born from NASA technology and perfected for sleep.
Free delivery available within 3 weeks.
The TheraPur Firth mattress combines cooling comfort with full-body support for a restful night's sleep. Layers of traditional springs, responsive ActiGel® foam, and bouncy PurFibre® provide pressure relief and airflow to keep you cool. Finished with an ActiCool® cover for an instant cooling sensation, this online-exclusive mattress is designed for lasting comfort.
The Firth is an upgrade on one of our bestselling mattresses, the Simcoe. Featuring brand-new cooling fabrics, this mattress has been refreshed to keep you comfortable all night long.