Excellent Giro Chronicle MIPS Mountain Bike Helmet

Features

• The MIPS (Multi-Directional Impact Protection System) is a slip-plane system within the helmet designed to rotate inside the helmet with the intent to potentially slow or reduce the amount of energy transferred to or from the head possibly reducing head injury from rotational impacts.
• In addition to enhancing the fit and comfort of helmets, Roc Loc 5 allows you to easily custom tune the fit tension and the fore-aft tilt of the helmet in seconds using a single hand. And it’s lighter than comparable systems too, making it the ultimate in skull-hugging luxury.
• The Super Fit Engineering is Giro's proprietary three-size fit system based on "human scale factors" and over 20 years of crafting helmets for the best bike riders in the world. The result is a helmet that fits 98% of the world's population, yet looks (and fits) like it was custom made just for you.
• The In-mold construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets.
• The Wind Tunnel elaborate design combines active vents in the helmet's shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider's head while forcing heat and stale air out.
• The P.O.V. Plus visor features an adjustment mechanism that lets you move the visor up and down in indexed steps. These steps include three riding positions plus a high position for goggle storage above your brow. The design allows you to easily adjust your visor with one hand while riding.