Macon 2.0 cycling helmet, EPS foam lining, MIPS shock protection system. Matt green. br / Size guide : br / Small 52.5 to 55 cm br / Medium 55 to 59 cm br / Large 59 to 62 cm br / br / Bern offers us the new version of its iconic bicycle helmet, designed around the assets that have made its success, with a classic yet modern style, reinforced protection and improved comfort. It will delight you with its sophisticated aesthetics. br / br / The helmet has a top ventilation system and two high-performance front inlets to ensure maximum comfort. br / br / Now lighter (approx. 375 g) it is equipped with MIPS technology for maximum safety. In the event of a violent impact, trauma to the brain is reduced.