Like many advances in consumer goods, memory foam has come from research and development into space applications. Originally developed to help absorb the impact of G-force on US astronauts, its wider industrial uses have extended to providing us all with the opportunity to experience sleep support that fits us like a glove.

Memory foam is also known as "visco elastic". It reacts to the temperature of the weight on it- your body in the case of a mattress - and moulds itself to the shape, giving complete support. When you get up and the memory foam stops sensing your body temperature, it reverts to its natural state. When you move during the night, the memory foam adjusts with you, providing you with the same support no matter what position you're sleeping in.