Atmosphere Helmet Even the sky won't limit your riding in the 509's new game-changing Atmosphere Helmet. Built for riders who prioritize comfort, cost-effective performance, and safety. When entering into riding on snow safety is a priority, with both DOT and ECE 22.06 certifications this helmet meets international safety standards for ultimate protection. The double D-ring chin closure and strategically placed venting ports manage moisture and enhance airflow, quick-dry cheek pads and liners do the work, while you concentrate on the ride. TECHNOLOGY FEATURES & SPECS Key Features Injection molded polycarbonate shell Dual density EPS foam in helmet shell with channel venting Six intake vents and six exhaust vents for optimal airflow Moisture wicking removable Liner & Cheek pads for custom fit adjustments and easy to wash → Shop Cheek Pads for Atmosphere Helmet Secure double D-ring closure Universal camera mount capable Replacable polycarbonate visor with Lifetime Warranty WARNING for California residents Specs Helmet Certification: DOT & ECE 22.06 Starting Weight: 1,250 grams Best Head Shape: Intermediate oval fit Size Range: XS - XL Shell Breaks:Large shell - XS, SM, MDXL Shell - LG, XL, 2X Included items: 509 helmet drawstring bag, breathbox, 509 Sticker