Features 1.Adjustable Fit: The helmet is designed with an adjustable head circumference, allowing to evenly distribute pressure, providing a snug and secure fit for every cyclist. 2.Ventilation Holes: With its stylish shape and 17 ventilation holes, this helmet reduces resistance and allows for efficient airflow, making cycling easier and preventing stuffiness during rides. 3.Stylish Appearance: Adjustable bicycle helmet has an updated appearance, which is able to show the user's fashion sense and make them stand out from the crowd. 4.PC Shell: The bike cycling helmet features a high strength PC shell that provides high impact resistance and shock absorption. 5.Easy Cleaning: The soft and comfortable chin pad ensures a pleasant wearing experience, while the removable padding can be easily cleaned, promoting hygiene and maintaining comfort. Specification Item Type: Bike Helmet Material: PC+EPS Head Circumference: Approx. 58-61cm/22.8-24in Ventilation Holes: 17 Package List 1 x Bike Helmet