6D ATR 2 Helmet Color:Mack Bronze Grey Black Alpinestars continues to lead the Alpinestars continues to lead the way in active air bag technology for riders and their passengers and Tech Air® 5 is a powerful demonstration of Alpinestar's commitment to making the technology more freely available as the best possible choice of 'active' airbag protection in the market TruMotion zonal all way stretch panels provide unmatched mobility the helmet can be shipped to 6D and inner EPS replaced the 6D ATR 2 Helmet's Omni Directional System is built around elastomeric dampers that allow the inner EPS liner to move independently from the denser