The Caden offers a sophisticated style with advanced head protection technology, making it a perfect match for your on-the-go lifestyle. The light, yet tough In-Mold shell helps to resist dents and dings from life on the streets, and the Roc Loc City fit system makes fit/feel adjustment almost effortless. Thoughtful details include reflective accents, a lock port for securing the helmet with your bike or a bag when you\\\'re on the move, and a removable cycling cap-style visor that accents your style without compromising ventilation. Key Features 12 Wind Tunnel vents with internal channeling In-Mold polycarbonate shell with EPS liner Roc Loc City Full Hardbody wrap Universal front light attachment point Featherweight webbing with Slimline buckle Giro Helmet SizingSMLXLHead Circumference (CM)51-55cm55-59cm59-63cm61-65cm Helmets Buying Guide