A helmet includes a lighting system integrated into the helmet. The helmet includes a first layer and a second layer. The helmet includes a plurality of light emitting devices between the first layer and the second layer. A controller is configured to control the light emitting devices. A power source is configured to power the light emitting devices and the controller. The light emitting devices are operably connected to the controller and the power source. In some configurations, a lighting system can be contained in a shell that that can be attached to an existing helmet. In some configurations, a lighting system is contained in a flexible material that can be fitted onto an existing helmet.