inForm Race last offers a slightly roomier, high-performance fit. Nylon composite Bronze Series sole. PowerTruss sole design improves stiffness without adding significant weight. Stiffness index 8 of 14. Two-strap design features no pull-thru top strap with set-and-forget lower strap. Micro-fiber uppers with flow-thru mesh panels. Easy-to-grab heel loop for quick entry.