Size Chart Steam rolling the market this winter is the all new Rollins. Utilizing Bern's tried and true Zipmold Technology this helmet has a tapered, thinner, low profile fit that is lighter weight with a higher strength to weight ratio than in-mold helmets. Throw that into a sleek new styling with hidden internal adjustable vent sliders that have a set and forget functionality for as little or as much ventilation as you need. Add a wireless audio ready knit with the all new premium micro adjustable fit liner for customizable fit and comfort, plus a helmet carrying bag... what more could you need? Features: - Bern's exclusive Zipmold(R) foam is a liquid foam injection process that provides a better weight to strength ratio so Bern can provide customers with a lighter, lower profile helmet - Adjustable vent sliders - Wireless audio ready knit - Premium micro adjustable fit liner - Weight: 16.9oz - Standards:Zipmold(R) hard foam meets ASTM F 2040, CPSC and EN 1078 standards for bike and skate - Last Chance: Discontinued Style Sizing: - S/M: 54 - 57 cm - L/XL: 57 - 60.5 cm - 2XL/3XL: 60.5 - 63.5 cm