The Nike Women's Pegasus 39 Running Shoes have a supportive sensation to help keep your feet contained, while underfoot cushioning and double Zoom Air units give you an extra pop to your step. Engineered mesh upper Flywire technology Nike React technology Extra padding at the tongue and collar Waffle-inspired outsole gives you excellent traction Grooves on the rubber sole allow for natural motion Lace-up closure Total comfort Extra padding at the tongue and collar help keep your foot feeling comfortable. They also come with engineered mesh, which is stronger and more flexible than regular mesh throughout the upper for lightweight breathability. Supportive steps Flywire technology is integrated with a midfoot band for total support that helps keep your feet in place. Snap, run and pop Nike React technology is a lightweight, durable foam that delivers a smooth, responsive ride. They paired with an Air Zoom unit at the forefoot and heel for an energised feel. Smooth transitions The heel shape is designed to maximise landing, helping you easily transition from heel to toe. They paired with thick foam for a responsive ride.