The Nike ACG Ultrafly Trail Running Shoes combine trail-ready durability with road-racing cushioning, ideal for runners who demand speed and comfort on mixed terrain. The HF5668-001 delivers responsive energy return and reliable traction for daily training and race day.
**Key Features:**
- Breathable mesh upper for lightweight ventilation and long-distance comfort
- Cushioned midsole absorbs impact and returns energy for a smooth ride
- Durable rubber outsole with aggressive tread for confident grip on trails
- Streamlined racing design built for speed without sacrificing stability
Size Charts
