Nexx X.LifeCountry Liner Replacement liner for the Nexx X.LifeCountry. Liners are interchangeable within the sizes: XS, Sm-Lg and Xl-3Xl. Sizing: SM: Available in 14mm thickness Compatible with XS Xs-Lg: Available in 18mm, 16mm and 14mm thickness Compatible with SM, MD and LG Xl-3Xl: Available in 16mm, 14mm and 12mm thickness Compatible with XL, 2XL and 3XL OEM Sizing: XS: 14Mm SM: 18Mm MD: 16Mm LG: 14Mm XL: 16Mm 2Xl: 14Mm 3Xl: 12Mm Note: Does not include cheek pads.