Adjustable Cycle Helmettadpole bike Helmet has passed CPSC and CE standard certification. There is an adjusting wheel on the back of the bike helmets, and the adjustable size range is 57-62 cm /22.44-24.40 inches, allowing you to customize the fit according to the size and shape of your head. This bicycle helmets men is suitable for most youth and adults. Bike Helmet with LED Light and Reflective StrapAdult bike helmet men comes with USB rechargeable tail light and breathable high elastic reflective strap, bike helmet include 3 lighting modes: flashing, slow-flashing, and constant light. Each mode provides enough visibility for the person behind you to clearly identify your direction in the darkness to avoid collision, making you safer while riding at night. Bike Helmet VentilationThe road bike helmet is designed with 11 vents to ensure optimal airflow. The cooling vents allow air to flow over your head to keep it cool and dry. tadpole bicycle helmet is very comfortable and lightweight, and you can hardly feel that you are wearing a bike helmet, and the special aerodynamic and ventilation design also helps to improve the speed. With the cool air, your mountain adventure is a very relaxing and comfortable experience. Cycling Helmet Sun Visor & LinerThe low profile visor reduces glare, prevents sun damage to your eyes and increases your field of vision. The velour heat-pressed lining on the inside of the bike helmet absorbs sweat from your head, helping to maintain an ideal level of comfort so you can wear your cycle helmet comfortably. The pads are removable so you can take them off and wash them to ensure your next clean and cool ride. Versatile & Stylish HelmetBike helmet is composed of advanced PC shell and high-density EPS foam, which provides you with safety protection, combining function and fashion. The fashionable and modern design can be matched with any riding equipment to make you look great on the road. Whether it's a mountain bike helmet, road bike helmet, urban commuter helmet or leisure bike helmet, the cycling helmet is designed to meet your safety needs and enhance your overall cycling experience.