The Nucleon KR-Ci is a high-performance, super-lightweight track and race chest protector featuring Nucleon Flex Pro Technology. 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. Unique Nucleon Flex Pro microstructure is designed for advanced energy absorption, adaptivity, maximum breathability, and airflow. Ergonomic protection plate contours to the natural curve of the body ensuring optimum fit for men and women. According to European statutory law, the CE mark is a conformity requirement for the marketing of the product. The following standard applies: Level 2 EN 1621-3:2018 (Chest)