Thermochromic indicators reveal heat distribution patterns during activity
Form and function deliver ultra lightweight, innovative performance with the New Balance FuelCell MD-X racing spike. This shoe features an updated engineered knit upper for ultimate weight savings. Stacked with engineered technology such as FuelCell foam and a carbon fiber plate, the MD-X gives you forward propulsion and performance-ready style on middle distance track races.
- FuelCell foam delivers a propulsive feel to help drive you forward
- Lightweight synthetic knit upper with strategic internal reinforcement
- Full-length external carbon fiber plate with six built-in pins for a blend of propulsion and traction
- Lace-up closure for an adjustable fit
- Designed to match Team New Balance colors
- Men??s 4 = Women??s 5.5
- Men??s 4.5 = Women??s 6
- Men??s 5 = Women??s 6.5
- Men??s 5.5 = Women??s 7
- Men??s 6 = Women??s 7.5
- Men??s 6.5 = Women??s 8
- Men??s 7 = Women??s 8.5
- Men??s 7.5 = Women??s 9
- Men??s 8 = Women??s 9.5
- Men??s 8.5 = Women??s 10
- Men??s 9 = Women??s 10.5
- Men??s 9.5 = Women??s 11
- Men??s 10 = Women??s 11.5
- Men??s 10.5 = Women??s 12
- Men??s 11 = Women??s 12.5
- Men??s 11.5 = Women??s 13
Micro adjustable closures enable millimeter precise fit customization.