•【Optimal Ventilation】26-hole ventilation system efficiently dissipates heat, ensuring maximum comfort during intense rides. •【Customizable Fit】Floating adjustment system with three-level positioning for personalized comfort and secure head coverage. •【Secure Fastening】Newly designed smooth buckle for easy wearing and reliable retention, built for long-lasting durability. •【Precision Adjustment】360° head circumference adjustment knob, ergonomically designed for a comfortable and precise fit. •【Odor-Resistant Lining】Eco-friendly, heat-pressed antibacterial and deodorizing fabric lining extends usage and reduces replacement frequency. •【Lightweight Protection】One-piece molded design with reinforced structure offers superior protection without compromising on weight. Specifications: •Material: PC shell + high-density EPS •Head circumference: 58-61cm Package included: •1 x Cycling Helmet