GORE-TEX along the upper helps keep water from seeping into your shoes without sacrificing the comfortable feel of the Peg Trail. Plus, updated materials around the ankle help ensure water and trail debris don't get into the shoe. Less rubber along the outsole creates a smooth transition from road to trail while preserving the full-length React midsole. Plus, it wraps around the front of the shoe to provide extra durability. A generative traction pattern combined with rubber in the forefoot provides extra grip for technical trails while maintaining a smooth ride for the road. Nike React technology is a lightweight, durable foam that delivers a smooth, responsive ride. Its full-length design provides stability as you brave rocky terrain.