The Epic React Flyknit 2 'Thunder Grey Ocean Fog' was released in late July 2019, featuring a seamlessly blended two-toned color scheme and a sleeker design compared to its previous version. Its breathable Flyknit material molds perfectly to the foot, providing a comfortable and secure fit akin to wearing a glove. The variable-width lacing system further enhances comfort and reduces pressure. Additionally, the redesigned heel clip significantly reduces weight, making it more suitable for extended distances. Furthermore, the React foam technology used in the sole is strategically patterned based on data analysis, ensuring an ideal energy return for optimal performance.