"What Our Gearhead® Experts Are Saying: ""This is a standout for riders who want a truly dialed fit. The conform system really wraps the head well, and the venting is easy to adjust when conditions change.""The Stellar Mips Helmet from Giro is built for riders chasing speed, flow, and long days across the mountain. Its low-profile design keeps things streamlined, while advanced fit and ventilation systems work behind the scenes to keep you comfortable from first chair to last lap. Conform Fit Technology allows the helmet to adapt to your head shape with the turn of a dial, creating a close, personalized fit that stays secure as you move. Thermostat Control venting lets you adjust airflow instantly, while Stack Vent technology helps release heat and reduce goggle fogging for clear vision. Integrated Mips technology is designed to reduce rotational forces in certain impacts, adding an extra layer of protection."