Xx - Large Top Flow Flat Black Pro 20Helmet, Pro20 Top Air, Full Face, Snell Sa 2020, Head And Neck Support Ready, Flat Black, 2X-Large, Eachproduct Linepro20Helmet Size2X-Largecircumfrence Low Range (In)24-13/16 Incircumfrence High Range (In)25-3/16 Incircumfrence Low Range (Metric)63 Cmcircumfrence High Range (Metric)64 Cmhat Size Low Range7-7/8Hat Size High Range8Open/Closed Faceclosedfresh Airyestop Airyesvent Systemyessnell Ratingsa 2020