The Relyon Sophia Mattress is for those who want to add a level of luxury to their sleeping experience. In addition to layers of British-bred wool and Belgian damask, the mattress boasts a unique blend of alpaca, pashmina and wool. Not only does this add further insulation and comfort, but increases its wicking abilities, ensuring that the users are neither too hot nor cold. This mattress doesnt need to be turned over, but the occasional rotation will help to ensure it reaches its optimum lifespan. The Sophia comes with an eight-year guarantee, for ultimate peace of mind. Optimal postural support The king-size version of the Relyon Sophia Mattress comes with a generous matrix of 3000 individually pocketed springs. Each spring is housed in its own fabric pocket, facilitating independent movement. This allows each spring to react autonomously to the weights and pressures placed on it and provide the best in postural support. In addition, pocket springs minimise the transfer of movement