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;