In the 1960s, nasa faced a challenge unrelated to rocket science: how to provide astronauts with a good night's sleep in outer space. To achieve this, it invented an entirely new viscoelastic material that was fluid and springlike at the same time. Tempur quickly realised the potential, and spent years perfecting its own version of the memory foam. Made from Tempur Adapt material, the Smart Cool pillow is designed to relieve pressure and conform to the shape of your head and neck. The Smart Cool technology woven into its cover absorbs excess heat to keep temperatures comfortable during the night.