Born from NASA technology and perfected for sleep.
Free delivery available from 2 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.
Feel instantly refreshed with our cool-touch ActiCool® mattress covers, expertly engineered to prevent overheating.
Everybody needs their body temperature to drop by 1-2°C in order to drift off to sleep. That’s where TheraPur comes in. Our cooling mattresses make finding your perfect sleep temperature totally effortless.