Safety Certified Bicycle Helmet for Adults and High School Perfect for and for Road and Adjustable Head Circumference Blue CPSC/CE (EN1078) Students,

[CE mark (EN1078) certified] Quality is constantly checked, including impact resistance tests, friction tests, and chin strap strength tests. [Impact-resistant, safe and secure two-layer construction] This durable cycle helmet is made of high-rigidity ABS and lightweight EPS material. The exterior is made of a single piece of reinforced ABS material, while the interior is fully covered with impact-absorbing EPS foam, providing both lightweight comfort and impact resistance. [Dial Adjustment, Fit Adjustment] The size can be adjusted with the dial on the back, and the dial adjustment system improves ease of use. The easily adjustable dial and adjustable side straps allow you to control the fit and comfort. [Excellent breathability and comfortable fit] 10 ventilation holes allow your hair to feel cool while riding. It also reduces wind resistance. The internal padding of the helmet is removable so you can keep it clean at all times. [Lightweight and comfortable to wear] Lightweight at approximately 268g, it does not put strain on the neck. You will not get tired even if you wear it for a long time. "Choosing the right helmet" First, measure your head circumference. Measure the length of the widest part of your head, approximately 2.5cm above your eyebrows. Recommended age range: 14 years and over. Recommended head circumference: 57 to 62cm (there may be an error of 1 to 2cm).