Lightweight, responsive foam and a lace-free design make the Nike React Phantom Run Flyknit 2 the ultimate in comfort for the everyday runner. Flyknit technology in the upper adds secure support while Nike React foam in the midsole helps to cushion your every stride. Smooth and Responsive Nike React technology delivers a soft, responsive ride. It provides support for the 3 phases of a runner's stride—flexibility at toe-off, a smooth ride at mid-stance and cushioning at contact. Secure Feel Flywire technology features an elastic design that intertwines with the Flyknit upper, helping your foot feel secure as you run. Lightweight and Breathable Flyknit Loft is the latest update to the popular material. 3 forefoot layers combine for a lightweight, breathable and durable feel that keeps your foot comfortable.