Featuring a GORE-TEX upper to keep water out while still offering extreme breathability, the FAST-TRAC NITRO GTX thrives in challenging conditions. A durable rubber PUMAGRIP ATR outsole provides reliable multi-terrain traction—ideal for trail running, inclement weather, or both—while full-length NITRO foam is ultra-responsive and cushioned. The reflective silver-hue topographical map-inspired pattern and formstrip will light up your next adventure.