Shoei Hornet X2 Snell 2020 Helmet Liner Replacement 3D Max-Dry System II center pad for the Shoei Hornet X2 Helmets. Liners are interchangeable only within the same shell, ie., XS and SM are interchangeable within helmet sizes, and XL and 2XL are interchangeable within helmet sizes. MD liners can only be used in MD helmets, and LG liners can only be used in LG helmets. OEM Sizes: Compatible only with Snell M2020 certified models XS: 13Mm SM: 9MM MD: 9MM LG: 9MM XL: 9MM 2Xl: 5MM Note: Due to manufacturer restrictions, Shoei products can only be shipped to addresses within the United States. Note: Not compatible with Snell 2025 rated helmets please check the certification sticker or production date (prior to May 2025) on your helmet to confirm before purchasing.