AN ICON GETS SLIMMER AND COOLER. The Nike Air Zoom Pegasus 36 returns with more cooling thanks to a perforated upper that targets breathability across high-heat areas. A slimmer heel collar and tongue help reduce bulk without compromising comfort, while exposed cables give you a snug, secure fit on the run. Open-hole mesh on the upper enhances breathability in forefoot and arch. Full-length Zoom Air unit provides a smooth, responsive ride. Slimmer design reduces bulk for a comfortable, conforming fit. Exposed Flywire cables in the midfoot promote a snug fit at higher speeds. High-resiliency sockliner adapts to the contour of your foot for support. Modified-Waffle pistons on outsole help absorb impact and provide multi-surface traction.Upper - Textile, Lining and Sock - Textile, Sole - Other Materials.