inForm Race last offers a slightly roomier, high-performance fit. Nylon composite Bronze Series sole. PowerTruss sole design improves stiffness without adding significant weight. Boa L6 dial for precise adjustment. Stiffness index - 7 of 14. Compatible with 3-bolt and 2-bolt SPD-style cleats (2-bolt mounting plate sold separately). Women Specific Design is engineered specifically to yield better fit and greater comfort for women.