The Nike ACG Ultrafly Trail Running Shoes combine trail-ready durability with road-racing responsive cushioning, making them ideal for runners who move fast across mixed terrain. The HF5668-700 delivers a lightweight, breathable build with a grippy outsole for confident traction on unpredictable surfaces.
**Key Features:**
- Breathable engineered mesh upper for lightweight ventilation and comfort on long runs
- Responsive foam midsole for high-energy cushioning and a smooth, propulsive ride
- Aggressive rubber outsole for reliable grip and stability on trail and road surfaces
- Durable construction built to handle mixed-terrain training and racing
Size Charts
