Carrera Foldable Basic Shiny White Bike Helmet E004667GR SM Meets safety requirements to both EN1078 and CPSC standards Elastic fitting system provides support to the back of head for exceptional comfort and stability Full Surface Ventilation with front to back vents allowing easy air flow keeping the riders head cool avoiding moisture retention Compresses by 20% when not in use for space saving storage Comes with a handy lockable ankle belt to strap around your "drive side leg" whilst riding