How to choose your size Snug fit; we recommend ordering a half-size up. Made from Sustainable Materials Largely due in part to the use of Nike React X foam technology, this shoe was made with about 20% recycled resources by weight. Product Features Performance road running sneakers that emphasize support for your stride Ultra-lightweight and breathable Nike Flyknit upper for a breezy feel Internal Flyknit fit band at the midfoot offers elastic, secure support Water-repellent liner in the toe helps keep you dry when the weather turns Curved outsole helps your foot rock smoothly from heel to toe during footstrikes Soft and supporting React X foam underfoot gives you an incredibly smooth feeling Waffle outsole with increased rubber provides durable traction with heritage Nike style The Nike Infinity RN 4 is imported. Hit the ground running with priceless peace of mind to go faster and further in the Women's Nike Infinity RN 4 Running Shoes. Prioritizing support and cushioning, these lightweight road runners make your pavement-pounding sessions less of a grind thanks to high stacks of foam underfoot and tuned support for plush landings and smooth transitions at any pace.