Design: Engineered mesh throughout the upper for lightweight and breathable durability Nike® FlyEase technology acts as a strap, helping secure the fit and provide easy on-and-off Flywire technology is integrated with a midfoot band for total support that helps keep your foot in place Flex grooves throughout give you extra flexibility Tongue is separated from the upper to give room for different foot shapes In-Shoe Comfort: Extra padding at the tongue and collar helps keep your foot feeling comfortable Nike® React technology delivers a smooth and responsive ride Zoom Air unit at the forefoot and heel for an energized feel at toe-off Durability & Traction: Rubber outsole with a waffle-inspired pattern provides traction Nike Women's Pegasus 39 FlyEase Running Shoes