The Giro Ceva MIPS is a fantastic value and loaded with style. Giro's In Form Fit System uses a dial located on the back of the helmet to help you get the fit adjusted to a safe and comfortable fit. Stack Ventilation helps prevents your goggles from fogging up by keeping air moving through the foam on the top of the goggle. MIPS (Multi-Directional Impact Protection System) uses a low-friction liner that can rotate in the event of an oblique impact to absorb the energy rather than transfer it onto your . Giro's Thermostat Control has adjustable vents that allow you to regulate the amount of airflow through the helmet to prevent overheating and keep you comfortable on the slopes. MIPS (Multi-Directional Impact Protection System). Hard Shell Construction. In Form Fit System. Thermostat Control. Stack Ventilation. Compatible with Outdoor Tech Giro Audio Systems. Seamless Integration with all Giro Goggles.