New without tags The Nike React Infinity 2 has soft and supportive cushioning, built to help keep you on the run. A refreshed Flyknit upper uses Flywire technology for support and breathability where you need it. Higher foam provides soft responsiveness and long-lasting comfort, plus a wider forefoot helps lessen the chance of stress-related injuries. It's still 1 of our most tested shoes, designed to help you feel the potential when your foot hits the pavement.