FXR Racing - All the right tools you need to fuel your Full Throttle Addiction. Replacement comfort liner for the FXR Youth 6D ATR-2 Helmet. Genuine Dri-Lex® fabric. 6D's proprietary design provides optimum support, comfort and fit. Features genuine moisture-wicking fabric for a superior sweat management solution. Snaps in-and-out in seconds for fast and easy attachment and removal. Completely machine washable.