The Womens React Infinity Run Flyknit may look familiar, but Nike have created a new concept in running. Designed to help reduce injuries and keep you running more often, it is a supportive shoe that works for pronators and neutral runners alike. Designed to help reduce injuries, the Nike Womens React Infinity Run Flyknit has an increased amount of React foam in the midsole to provide a huge amount of responsive cushioning. The React foam is shaped to give a wide, supportive base to push off from and a large curve at the heel and the toe provides a smooth transition from heel strike through to toe off. The improved amount of cushioning, wide base and smooth rocker all contribute to a stable and supportive shoe that is designed to benefit any type of runner, from someone just starting out, to training for race day, overpronators, under pronators, and neutral runners alike. A completely new Flyknit upper combines three separate layers to create a lightweight fit that is stronger, and more durable than previous versions. A comfortable, sock like fit hugs the foot with a true to size shape. Nike have reduced the material between your foot and the midsole for a softer, more responsive experience. The rubber outsole is shaped to provide a flexible forefoot, with improved cushioning at the heel. Weight 229 grams 8.09oz Women39s size 8 Offset 9mm Forefoot 21.5mm, Heel 30.5mm React Foam midsole. All new threelayer Flyknit upper. Supportive shoe that works for neutral runners as well as over and under pronators alike. Designed to help reduce injuries.