Abstract: A helmet, especially a cricket or other sports helmet, comprises an outer shell member and, disposed adjacent its inner surface, a layer comprising an inflatable element operatively connected with inflation mechanism. The layer comprising the inflatable element preferably comprises a plurality of individual cells or pockets defined by a fluid-impermeable plastics membrane material, the individual cells or pockets being mutually in communication for pressurization and pressure-release purposes and connected to the inflation mechanism. The cells or pockets may contain impact-absorption or cushioning materials which are preferably porous to allow absorption and desorption of the inflation fluid.

Abstract: A helmet, especially a cricket or other sports helmet, comprises an outer shell member and, disposed adjacent its inner surface, a layer comprising an inflatable element operatively connected with inflation means. The layer comprising the inflatable element preferably comprises a plurality of individual cells or pockets defined by a fluid-impermeable plastics membrane material, the individual cells or pockets being mutually in communication for pressurisation and pressure-release purposes and connected to the inflation means. The cells or pockets may contain impact-absorption or cushioning materials which are preferably porous to allow absorption and desorption of the inflation fluid. The helmet exhibits improved resistance to transmission of impact forces compared with conventional helmets.