Kufun Road Bike for Adults and Cycling Helmet, Adjustable, Unisex, (Black)

[Material] Styrofoam + PC [Size] Head circumference: 55-62cm You can adjust the dial to fit the size to your head. [Excellent breathability] Designed with 18 ventilation holes, it can efficiently expel hot air from inside the helmet. Weighing just 280g, it is so light that you barely feel its weight, making it comfortable to wear even for long periods of time. The helmet is covered with PC material, making it highly durable and providing excellent safety. A basic model for adults, with great cost performance. Kufun has 20 million users in China. The Kufun brand is "trustworthy"!