The Giro Men's Hex Bike Helmet Is stocked with all the features you need for a day on the dirt! It includes the comfort and stability of Roc Loc 5 and the patented P.O.V. visor that doesn't require any tools for adjustment. In addition, you'll also appreciate how easily air flows through the 22 vents. Air comes in easily through the front of the helmet, and efficiently flows through the back so your noggin stays cool and comfortable.