The Anon Men's Echo Snow Helmet features the In-shell 360° Boa® Fit System for easy, on-the-go fit adjustment with the turn of a dial. It's a full-featured helmet that will have you raving over the slick, well-vented design. In-mold shell construction offers the best in comfort with a sleek, low-profile fit and feel. The Goggle Ventilation Channel brings in fresh air to prevent google fogging. Active Ventilation gives you one-handed control over 12 total vents, so you can fine tune your temperature depending on the weather and activity.