Rubber sole Nike React technology is a lightweight, durable foam that delivers a smooth, responsive ride. High-rise cushioning is placed directly under your foot so you're closer to the foam for a truly responsive experience. Hybrid tongue combines a sock-like feel with the adjustability of a traditional design. Soft padding along the collar provides a cushioned touch point. Additional rubber on the outsole gives traction and durability. As one of our most tested shoes, the Nike React Infinity Run Flyknit 3 was engineered to help you pursue your running goals in comfort. A breathable upper helps your foot feel contained but flexible, while added cushioning around the heel and ankle help provide a supportive sensation. Plus, the unique rocker-shaped sole helps allow for a smooth, stable ride on both long and short routes.