All riders are required to have a certified CPSC helmet for Groove Tour. Please note that a number of online retailers sell helmets that are not CPSC certified, so it’s something you’ll want to check. You can find out by looking for the sticker inside of the helmet, making sure it states compliance with the CPSC standard like the example on the left. If you're on the market for a new helmet, Virginia Tech did a comprehensive study testing 86 road cycling helmets. You can find details on their findings and ratings here.