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. Available in three sizes from 35 mm to 45 mm, ATR-1Y cheek pads provide the perfect tool to create your personal custom fit. Also, it's great to have an extra set to switch-out between races. Snaps in-and-out in seconds for fast and easy attachment and removal. The Emergency Release System provides easier access and helmet removal during emergency situations. Completely machine washable.