Nike's proprietary REACT FOAM Technology returns to Sneaker Pimp with the React Infinity Run FlyKnit 4. Now with a more advanced REACT X FOAM thats more plush with a higher energy return and better shock absorption than the first generation of REACT FOAM. Fully Loaded with FlyKnit upper, few if any trainers in the market can compete with the new REACT Infinity Run FlyKnit 4!