Bern FL-1 Pave Road Helmets are entry into the road helmet market with a lightweight, aerodynamic design with max ventilation Lightweight and breathable 360-degree adjustable Bern Yoke fit system developed with Boa. Reinforced in-mold EPS construction with 18 total vents Interior air flow channels for added ventilation Built-in sunglass storage on the shell exterior Antimicrobial comfort padding Small: 52-55.5cm, Medium: 55.5-59cm, Large: 59-62cm 244g