ECE / DOT approved ADAPTIVE IMPACT SYSTEM (AIS) 12K carbon fiber shell produces an extremely lightweight shell with superior penetration resistance impact Energy Cells made of RHEON, the Impact Energy Cells maximize absorption of low-speed linear and rotational impacts, reducing forces transmitted to the brain Conehead® EPS Technology provides a softer liner whereby the cones help manage or absorb an impact force more efficiently. Six critical zones have been fine tuned for a progressive response to low-speed and high-speed impacts. Expanded volume EPS means strategic areas of the helmet have more impact absorbing EPS, more suspension between your head and the ground Expanded Polypropylene (EPP) chin bar creates an additional element of impact mitigation, and is used in the chin bar for its superior damage resistance, and energy absorbing properties 1290 grams +/-50g (size MD/LG), 2.8 pounds +/-0.11lb (size MD/LG) For technical support with the FLY Smart App/Smart Features, please contact support@quin.design