A protective helmet comprising at least one compression spring that connects one or more inner shells to an outer shell. Once the multiple shells are connected, they provide a multiple layer protection system that absorbs and reflects energy by compressing. The compression springs also comprise a threaded spring cap that allows for easy connecting and disconnecting between the compression springs and the shells. The threaded spring cap allows the springs to be exchange within the multilayered shell, for springs of a different compression rate, size, or material if desired; which would allow customization of the protection level provided by the protective helmet.