Nike Epic React, is 11% softer than the LunarEpic Low Flyknit and 13% bouncier. It is also 5% lighter, making it one of the lightest-cushioned shoes you can buy. Powered by heat map data, designers determined how much Nike React technology was needed and where. After testing with athletes – how their feet move, which direction and with much speed and force, Nike was able to shape the foam for a running shoe.
Nike has stated that the best innovations come from listening to the athlete. When asking athletes what they would improve with cushioning, their answer was EVERYTHING and Nike was up for the challenge. Nike chemists took three years testing materials and design methods and after 400 combinations, they finally landed with Nike React.