BERN - Allston Helmet with Flip Visor

Urban cyclist styling bold colors and prints and overall comfort and performance Zipmold Technology for a tapered thinner low profile fit that is lighter weight with a higher strength to weight ratio than in-mold helmets 16 vents for more than twice as much airflow as Bern's other leading bike models Performance liner with adjustable dial allows for a customized fit with moisture control and is replaceable should one need to freshen up a bit Small: 52-55.5cm Medium: 55.5-59cm Large: 59-62cm