6D ATB-2T Ascent Helmet Maximum Trail Protection, Reimagined Designed with one mission-to build the safest trail helmet possible-the 6D ATB-2T Ascent combines extended coverage, lightweight construction, and advanced impact management to create the ideal trail helmet. The ATB-2T Ascent features a 3/4 shell profile, with a sleeker, better-ventilated fit than its predecessor, all while integrating 6D's fourth-generation Omni-Directional Suspension(TM) (ODS) system for unparalleled rotational and linear impact reduction. Finished with rider-friendly touches like a sunglass dock, Fidlock buckle, and adjustable visor, this helmet is built for aggressive trail riders who prioritize safety and comfort. Features4th Generation Omni-Directional Suspension(TM) (ODS) advanced energy management for multi-impact protection Lightweight design7% lighter than the ATB-1T, weighing just 460g (size M/L). Ventilated designwith large brow intake and flow-through channels, improving airflow on climbs and descents Smart fit and storage includes a 3-position adjustable/removable visor and sunglass dock5-Star Virginia Tech rated and NTA 8776 E-Bike certified for the highest level of safety certification SPECIFICATIONSSuspension System Omni-Directional Suspension(TM) (ODS), 4th generation Liner Multi-impact EPP liner with EPS outer liner Shell Material Polycarbonate Visor3-position adjustable and removable Paddingionic+ antimicrobial Strap Closure Fidlock Eyewear Compatibility Compatible with sunglasses and goggles Safety Certifications CPSC / EN1078 / AU/NZS 2063, NTA 8776 E-Bike Included Accessories Mesh travel bag Weight 460 g (size M/L)Sizing Helmet Size Size (cm)Approximate Size (Inches)XS/S53-5620 7/8" - 22"M/L56-5922" - 23 1/4"XL/XXL59-6223 1/4" - 24 7/16" | 6D Helmets | Atb-2T Ascent Helmet | Size Medium/large In White