The Formula line of helmets (designated "FN") takes the concept of lightness further by eliminating the integrated accessory ports on the side of the helmet. This gives absolutely the lightest full-face Formula style helmet in the world at just 2.58 pounds. The FIA 8860 Helmet homologation standard is meant to standardize helmet specifications for professional racing series. Most racers will not need helmets that conform to these extremely stringent regulations. Please check your rules to see if you need an 8860 helmet.