Our Next-Gen Memory Fibre Pocket Spring Mattress is a fantastic value for money pocket spring mattress. Pocket springs utilise individual springs pocketed to work independently of each other. This means, each spring independently reacts to your weight and movements meaning a more comfortable nights sleep. The pocket spring unit is complimented by a generous layer of polyester and our revolutionary memory fibre comfort layer. This is a 21cm deep mattress. This mattress arrives rolled and boxed to allow for easy transport to a room of your choice. - eXtreme Comfort Ltd Next-Gen Memory Foam Pocket Spring Mattress in Grey - Size: Small Single