Adult Cycling Bike Helmet for Men Women Adjustable Cycling Helmet Bike Helmet for Adult, Commuter, with Removable Visor The helmet is crafted with ABS shell and EPS liner. CPSC, CE EN 1078 certified. High-density EPS foam liner for shock absorption ensures better protection. Adjustable helmet circumference fits for most adults’ heads. Size M & L are available. 6 vent holes are designed to offer optimal airflow, keeping you cool and comfy. The unique lock hole allows you to lock the helmet with the bike to avoid being stolen. The removable visor can protect you from rays, sunlight and rain. IntroductionCertified SafetyOur Adult Bike Helmet is constructed with solid and sturdy ABS outer shell, and shock-absorbing EPS foam liner, which complies with CPSC, CE EN 1078 certification standards, thus effectively protecting your head.Size Adjustment SystemThis Bike Helmet for Adult is equipped with a knob on the back for adjusting the helmet circumference, so as to fit for most adults’ heads. Besides, the strap on the chin is also adjustable to flexibly fit your face, achieving a stable and comfortable wearing.Light Weight & VentilationOwing to the well-selected materials and excellent structure, this Cycling Helmet weighs less than 1lb (M: 9.4oz/267g; L: 10oz/288g), won’t burden your head. In addition, 6 vent holes are strategically distributed on the helmet, maximizing airflow and keeping you cool during commuting.Lock Hole DesignOur Skateboard Helmet is designed with a lock hole, which is compatible with various locks such as U-lock, chain lock, or bike combination lock. You can lock the helmet together with the bicycle when the helmet is not in use. Also, the lock hole is reinforced to ensure better anti-theft effect. (Lock is not included.)Soft & Removable VisorRUNACC Adult Helmet is assembled with a removable visor to protect your eyes against rays, sunlight, rain and anything else that may harm you during the day. It is easy to remove for cleaning. Moreover, a free bike light is provided, which comes with 3 lighting modes, perfect for night cycling (button cell is included). FeaturesMaterial: ABS & EPSApplication: urban bike commuting, electric bikes, skateboards and so onSize (about):M: 9.6 7.9 6.3″/24.5 24.5 16cmL: 10.2 8.3 7.1″/26 21 18cmHelmet circumference:M: 22.4-23.2″/57-59cmL: 23.2-24.4″/59-62cmWeight (about):M: 9.4oz/267gL: 10.2oz/288gColor: blackPackage list: 1* helmet; 1* visor Notice* The actual color may vary slightly from the online image due to monitor color settings.* Please allow slight measurement deviation for the data.* If you want to know more details or have any questions, please look through the detailed page or contact the customer service.