"What Our Gearhead® Experts Are Saying: ""This is a go-to for riders who want top-tier protection with a really dialed fit. The spherical construction feels solid, and the venting is easy to adjust as conditions change.""The Tenaya Spherical Helmet from Giro is built for long days on the mountain, whether you're chasing clean groomers, exploring off-piste terrain, or heading beyond the resort boundary. It blends modern freeride style with advanced protection and fit systems that keep you focused on the terrain ahead. Spherical Technology, powered by Mips, uses a unique two-part construction designed to help reduce rotational forces in certain impacts while maintaining a comfortable, low-profile feel. The In Form 2 Fit System allows precise, on-the-fly adjustments—even with gloves—while Thermostat Control venting lets you fine-tune airflow as conditions shift. Stack Vent technology helps release warm air to reduce goggle fogging, keeping vision clear through changing weather."