Size: M 48-58cm Air conditioning : 16 holes Helmet material : EPS foam Material inside the Helmet : sweat absorbent pad Sheet material : Polycarbonate PC Weight : very light and comfortable (195g) Resistance : resistant to angled and direct impacts Fastener type : PP It has an adjustable strap under the chin It has adjustable screw rigging with nylon material and is very comfortable to be placed on the head Has a sun visor