In the United States, the DOT (Department of Transportation) handles the certification for the minimum standards necessary as outlined by FMVSS 218. Any helmet must pass this certification in order to be able to use the DOT sticker. When researching motorcycle helmet reviews, you may see some mentions of a Snell certification. Snell is just another set of standards that many believe to be even more stringent than DOT, which is up for debate. Regardless, every Snell certified helmet still needs to pass the DOT standard first so having both is just another way to make sure you are doing your best to protect your precious head These D.O.T. helmet meets or exceeds all D.O.T. Standards. Buy DOT approved helmets online.