inForm Race offers a slightly roomier, high-performance fit. Nylon composite Bronze Series sole. The PowerTruss sole design improves stiffness without adding significant weight. Stiffness index - 7 of 14. 3-strap hook and loop closure system. Compatible with 3-bolt and 2-bolt SPD-style cleats (2-bolt mounting plate sold separately). Women's Specific Design is engineered to yield a better fit and greater comfort for women.