Integrally-Molded Helmet As an integrally-molded helmet, it provides enhanced safety and durability against impacts. Multiple Air Vents With 8-15 air vents, the helmet promotes airflow, keeping your head cool and dry throughout your journey. Breathable Material Constructed with breathable EPS material, this helmet ensures optimal ventilation and comfort during extended rides. Certified Safety Certified by ce, this helmet meets international safety standards, ensuring rider protection. Magnetic Lock Buckle Equipped with a magnetic lock buckle, the helmet offers a secure and stable fit for both men and women. Aerodynamic & Breathable Cycling Helmet Helmet is made of 6-piece PC + high-density EPS 58-61CM--Weigh only about 280 grams Applicable head circumference 58-61CM Using lONIC + negativeion antibacterial lining / Reduce odor and keep your head dry Using a magnetic suction lock buckle makes it more convenient to disassemble. It has an in-built insect-proof net that can block flying insects.