This graduation project contains the process and design of a dynamic modular sleep system. This system is a solution for problems caused by existing static beds. People change positions during their sleep and static beds do not adjust to these changes which may result in bad spinal alignment. This could be the cause of sleep- or medical disorders. The design made in this master project is the first step towards a solution. An innovative pressurized bellow system is used to change the shape of the sleep surface.