Experience superior safety and comfort with this versatile helmet, expertly crafted from high-quality ABS and EPS materials to deliver exceptional impact resistance and durability. Designed for both children and adults, this helmet offers a secure and customizable fit with an easy-to-use adjustment knob that perfectly adapts to various head circumferences, ensuring maximum protection during all your outdoor activities such as cycling and skateboarding. Key Features: · Superior Breathability: Multiple large ventilation holes promote excellent airflow, effectively wicking away sweat to keep you cool and comfortable during extended wear. · Removable Lining: The detachable inner lining allows for easy cleaning, helping to reduce odor and maintain freshness and hygiene over time. · Adjustable Fit: Equipped with an intuitive adjustment knob on the back, this helmet enables precise head circumference control for a snug, secure, and comfortable fit. · Durable Construction: Made from premium ABS and EPS materials, providing robust wear resistance and effective shock absorption without sacrificing comfort. · Lightweight Design: The helmet's overall lightweight build reduces pressure on the head, making it comfortable to wear for long periods. · Multiple Size Options: Available in sizes S (470-530mm), M (540-600mm), and L (580-620mm), suitable for a wide range of users, from children to adults. · Color Variety: Choose from multiple colors including black, white, blue, pink, and red to match your personal style. Specifications: · Material: ABS + EPS + Sponge · Sizes:  - S: 470-530mm, Weight: 325g (11.5oz)  - M: 540-600mm, Weight: 340g (12.0oz)  - L: 580-620mm, Weight: 355g (12.5oz) · Package Size: 280 x 200 x 200mm (11.0 x 7.9 x 7.9 inches) Package Includes: · 1 x Protective Helmet This helmet combines advanced safety features with breathable comfort and customizable fit, making it an ideal choice for anyone seeking reliable head protection in various outdoor sports and activities. Stay protected, cool, and comfortable with this thoughtfully designed helmet.