THE CALDERA II MODULAR MOTORCYCLE HELMET The all-new Caldera II is a value packed modular helmet designed to provide you with the freedom and flexibility for riding in any weather condition, all season long. With features including a 30% larger optically correct clear shield, ultra-comfortable removable wick-dri liner, and modular flip-up helmet design, the Caldera II will comfortably support you during both short and long-distance rides. CALDERA II MODULAR HELMET FEATURES: • Modern, lightweight 3.5 lbs aerodynamic shell. • Massively expanded field of vision (30% larger!). • Modular helmet design with secure metal jaw-locking system & easy one-handed front jaw opening switch. • Drop down smoke sunshield with side-helmet action switch. • 3 closable intake vents with an angled passive anterior exhaust vent to allow maximum air flow out without allowing wet weather in. • Washable, replaceable Comfort Tech Wick-Dri Liner System keeps you dry and comfortable. • High density channeled air flow EPS liner is pre-drilled to accommodate nearly all communication systems. • Padded quick-release strap system. • DOT & ECE approved helmet offers world class protection. • Every batch of snowmobile helmets are randomly tested to ensure safety standards are met. above your eyebrows & the largest part of the back of your head: -X-Small : 20.87”- 21.26” - Small: 21.65" - 22.05" - Medium: 22.44" - 22.83" - Large: 23.23" - 23.62" - X-Large: 24.02" - 24.41" - XX-Large: 24.80" - 25.20” -XXX-Large: 25.60” – 26.00”