6D's mission is to provide the public with superior safety helmets from both a technological perspective and a design perspective. They continually challenge the company to improve its technology and lead the marketplace with innovative designs. Replacement comfort liner for the 6D Helmets ATR-2Y 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.