Nike ACG Ultrafly Trail

Nike exists to bring inspiration and innovation to every athlete in the world. By relentlessly pushing the boundaries of sports technology, they create high-performance gear that helps runners of all levels break barriers and achieve their personal best.

- The ACG Ultrafly fits true to size. Take your usual shoe size. - If you're not sure, compare your foot length to the chart below **Foot Measurements** | US Men's Size | EU Size | Foot Length (in) | |---|---|---| | 7 | 40 | 9 11/16 | | 7.5 | 40.5 | 9 13/16 | | 8 | 41 | 10 | | 8.5 | 42 | 10 3/16 | | 9 | 42.5 | 10 5/16 | | 9.5 | 43 | 10 1/2 | | 10 | 44 | 10 11/16 | | 10.5 | 44.5 | 10 13/16 | | 11 | 45 | 11 | | 11.5 | 45.5 | 11 3/16 | | 12 | 46 | 11 5/16 | | 12.5 | 47 | 11 1/2 | | 13 | 47.5 | 11 11/16 | | 14 | 48.5 | 12 | *All measurements are in inches* **How to Measure** - Foot Length: Measure from the back of your heel to the tip of your longest toe

- Midsole: ZoomX foam with full-length carbon fiber plate - Outsole: Vibram® Megagrip - Upper: Lightweight trail-ready mesh

- "Unwrapped" ZoomX foam in the heel delivers Nike’s most responsive energy return for peak trail speed - Refined full-length carbon fiber plate provides a propulsive snap with increased flexibility for better control - Exclusive Vibram® Megagrip outsole offers elite-level traction on slick, wet, and technical terrain - Lightweight, high-tenacity upper engineered for maximum durability and breathable containment - Strategic outsole design reduces overall weight while maintaining high-abrasion resistance for long-range racing

**Carbon-plated speed meets elite Vibram® traction for the technical trail** The Nike ACG Ultrafly is a trail racing machine designed to turn technical terrain into a fast track. Built for speed and distance, this version refines the original with a softer, full-length carbon fiber plate that offers a smoother transition and better control on uneven surfaces. Grounded by an exclusive Vibram® Megagrip outsole, it balances ultralight ZoomX responsiveness with the rugged durability required to push through wet and rocky miles without weighing you down.