Springs play a vital role in a mattress, helping to distribute weight evenly across the surface. This not only makes for a better night\'s sleep, it can also help to prevent excessive pressure on one area of the body. The Natural Echo 1000 earns its title due to the fact that each mattress contains a thousand pocket springs! That\'s a thousand little aids to a comfortable night! The use of natural wool and cotton in the construction also provides a good level of temperature control, helping to keep sleepers dry and comfortable throughout the night.A touch of luxury is provided by the Tencel cover: Tencel is a man-made fibre that\'s sourced from plant material. This means it\'s not only soft and strong, but it\'s also a sustainable choice.