The Nike React Infinity Run decreased injuries by 52% in testing*. The top three features of this sneaker that we appreciate the most are: This shoe is soft because it has 24% extra cushioning. The wider midsole improves stability. The outsole is durable, with flex grooves that increase traction. Nike also made some changes to improve comfort. For example, there's a new upper material that's 50% synthetic and 50% natural leather. It feels like real leather but is 20% lighter. There are also fabrics inside the shoe that act as insulation when you need it most. Finally, the React Infinity Run has a new design that makes them easier to wear for long periods of time. No more pain after just an hour!