The Nucleon Flex Pro Ci Chest Protector is a high-performance, super-lightweight track and race chest protector featuring Nucleon Flex Pro Technology. It is constructed from a high-performance polymeric material blend for optimized flexibility and excellent weight-saving properties. The chest protector's structure provides the perfect balance between force dispersion and energy absorption. The unique Nucleon Flex Pro microstructure is designed for advanced energy absorption, adaptivity, maximum breathability, and airflow. The ergonomic protection plate contours to the natural curve of the body, ensuring an optimum fit for both men and women.