The MET Allroad bike helmet is a versatile unisex helmet designed for both mountain biking and road cycling applications. This adult helmet in size S fits head circumferences of 52 to 56 centimeters and features a matte titanium-colored surface. Made from durable polycarbonate material, the helmet offers exceptional lightweight performance while maintaining high safety standards. The Allroad model integrates 16 strategically placed aerodynamic ventilation openings that ensure optimal airflow during intense rides. A special feature is the removable visor system, which easily clicks in and out of the side ventilation openings without the need for additional mounting clips, allowing for a clean and adaptable design. The helmet includes integrated LED lighting for improved visibility in low-light conditions and is specifically designed to accommodate ponytails for comfortable long-term wear. With its all-season suitability, this helmet provides reliable performance in various weather conditions and cycling disciplines. The minimalist design philosophy emphasizes functionality while maintaining aerodynamic efficiency. When selecting your helmet size, measure your head circumference about 2.5 centimeters above the eyebrows and consult the manufacturer's specific size chart, as sizing conventions can vary between brands. For borderline measurements, consider opting for the larger size to ensure optimal comfort during longer rides.