Highgrove Dawson Mattress in a Box - 3ft6 Large Single; Not too soft and not too hard, the Dawson mattress features a non-sprung interior and is designed to suit those who prefer a medium sleeping surface. Upholstered in a soft to touch stretch knit fabric with white fibre fillings below, the mattress core is made up of an advanced interior of reflex foam. Designed to conform to your body39;s contours, advanced reflex foam distributes your body weight evenly, resulting in reduced pressure points. As it39;s a double-sided mattress, it is recommended that it39;s rotated and flipped over regularly. This will enhance its comfort, support and lifespan. For convenient transportation, it will be delivered vacuum packed in a roll and boxed. When opened, it will fill out to its full size within a few hours.