The MET Codatronca is an aerodynamic time trial helmet with a short tail design, optimized for performance cycling. Developed through wind tunnel testing at the Politecnico di Milano and Milano Newton Lab, this helmet maintains aerodynamic efficiency while allowing natural head movements across multiple riding positions. Constructed with an injection-molded polycarbonate shell and EPS inner lining, it provides reliable impact protection at a weight of 335 grams. The helmet features four low-resistance ventilation openings and internal ventilation channels that effectively regulate airflow to control head temperature during intense cycling sessions. A 360-degree headband system offers vertical and horizontal adjustment options for a precise fit. Additional features include Air Lite straps for reduced weight and minimal interference, removable hand-washable padding for hygiene, and a Fidlock magnetic closure system for secure, tool-free fastening. The MET Dual Shield compatibility allows for the integration of various eyewear systems. Available in a black-silver matte-gloss finish, this unisex helmet is suitable for head circumferences of 52 to 56 centimeters, corresponding to size S. The aerodynamic profile and ventilation system make it suitable for time trial competitions, triathlon events, and high-performance road cycling throughout all seasons. A proper helmet fit is essential for both safety and comfort, and users should measure their head circumference about 2.5 centimeters above the eyebrows to determine the correct size according to the manufacturer's specifications.