Product details:<br> Crashworthiness<br> The adult bicycle helmet uses a sturdy and durable PC shell, and the interior is made of high-density EPS foam material, which has a good shock-proof and protective effect.<br> <br> Specifications <br> Type: Bicycle Helmet<br> Material: PC and EPS<br> Design: 18 Ventilation Holes<br> Size: One Size (54 cm -61 cm/21.3 inches -24 inches)<br> Color: Blue White / Pink Gray / Red Black / Yellow Black / Blue Black / Purple Gray<br> <br> Package Contents<br> 1 * Bicycle Helmet<br> <br> Note:<br> 1. Please understand there may be 1-2 cm deviation exist. <br> 2. Due to the lighting and monitors, there are slight difference between the picture and the real item.<br> <br> Promise<br> If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.