The popular Era helmet is designed for all-mountain action with feminine charm. The low-profile design of the Era features the proven performance of In-Mold Construction, our In Form Adjustable Fit System and adjustable venting. The Era offers incredible value without compromising featuresall in a stylish performance package. Stack Vent Technology was developed based on research the majority of warm air that can cause fogging comes from the goggle's center top vent. Aligning the Stack Vent in the helmet with the center vent of the goggle helps keep it clear and fog-free. Seamless Compatibility: for optional performance of both helmets and goggles, Giro helmets are designed to work together, ensuring a seamless inerface between helmet and goggle for an exceptional fit and dependable, worry-free function in Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbign foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets.