the macon 2.0 from bern is a high-quality all-round helmet for the whole year. the macon 2.0 helmet from bern is now 33% lighter than its predecessor and offers even more protection. the helmet is a real all-rounder and is suitable for a wide range of sports, from skateboarding and cycling to skiing and snowboarding.constructionthe abs construction keeps the foam layer on the inside of the helmet separate from the hard outer shell. this creates a very thick, impact-resistant outer layer. ventilationthe helmet is equipped with a passive ventilation system. it automatically ensures ideal ventilation.