Giro says about the Avera
The Avera™ helmet is the new foundation in the Giro helmet line and a new favorite. The Avera benefits from lightweight in-mold construction and features a personalized fit via the In Form™ Fit System with Vertical Tuning. Meanwhile, on-the-go temperature control for maximum warmth or cooling is achieved through Thermostat Control™ Adjustable Venting combined with the fog-free Stack Vent. The new Avera truly provides the perfect fit, plush comfort and added protection needed for all conditions and terrain.