How to choose your size.Snug fit; we recommend ordering a half-size up..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 ReactX foam underfoot gives you an incredibly smooth feeling.Waffle outsole with increased rubber provides durable traction with heritage Nike style.The Nike ReactX Infinity RN 4 is imported..Hit the ground running with priceless peace of mind to go faster and further in the Women's Nike ReactX Infinity RN 4 Running Sh Nike Running Shoes With Air Cushioning For Workout, Air Max Cushioned Walking Shoes For Training, Ergonomic Running Shoes With Air Max Cushioning For Training, Ergonomic Air Max Cushioned Running Shoes For Training, Functional Training Sneakers With Gel Cushioning, Low-top Training Sneakers With Gel Cushioning, Ergonomic Air Max Cushioned Sneakers For Jogging, Nike Running Shoes With Air Max Cushioning For Gym, Nike Walking Shoes With Air Max Cushioning For Sports