A Comfort Revolution TEMPUR is a material unlike anything you have ever touched before TEMPUR is a visco-elastic temperature sensitive material that moulds to your body. It yields slowly under compression, making no counter pressure, until the load is distributed on the entire area. When the load is removed, TEMPUR recovers slowly.   Combining softness with unmatched durability TEMPUR is a comfort revolution. It combines any determined softness with an unmatched durability. In a standard test, the thickness loss of TEMPUR after 80,000 compressions is less than 5 percent compared to approximately 10-15 percent for a highly elastic polyurethane foam.   Conclusion of an independant customer survey: 91% say that the TEMPUR Mattress is extremely comfortable.   See Endorsements/Customer Surveys - Click here