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Memory foam consists mainly of polyurethane with additional chemicals that increase its viscosity and density. It is often referred to as "viscoelastic" polyurethane foam, or low-resilience polyurethane foam (LRPu). The foam bubbles or ‘cells’ are open, effectively creating a matrix through which air can move. Higher-density memory foam softens in reaction to body heat, allowing it to mold to a warm body in a few minutes. Newer foams may recover their original shape more quickly.[1]
- ^ Nelles, Barbara. "Exhibitors emphasize value pricing in Vegas Foam trends, adjustables and top-of-bed also make news Archived 2014-02-03 at the Wayback Machine." BedTimes Magazine. November 2009. Retrieved 2020-12-29.