The E-Bahn is the perfect helmet for commuters. It’s been called “the helmet of the future,” and for good reason. With a simple, sleek design, it fits on your head like a glove. And yes, the E-Bahn is sturdy — it’s made of hardened ABS plastic, the industry standard. It’s also comfortable: The E-Bahn features 15 large ventilation windows for maximum airflow. Lastly, the E-Bahn is equipped with a bright LED light, so you’ll be visible while riding, and a visor, to protect your eyes from the sun so you can focus on the road. Truly innovative. Features: High impact ABS Shell with EPS liner for shock absorption and protection Rear XL LED Light with 3-multi-functions for visibility day/night Active Ventilation with 15 large air flow windows Pro 360º Dial Adjustment System for fine tune fit Stylish Urban Design with visor Comfortable Inner Padding and soft padded chin strap with ITW buckle SPECIFICATIONS small 51-55 (cm) medium 55-58 (cm) large 58-61 (cm) xl 61-64 (cm)