the TR31 shoes has a normal last (or shape), ensuring that the fit is snug to reduce the possibility of hot spots. And the lightweight, fiberglass-reinforced polyamide sole transfers power to the pedals, without being so rigid that it causes numbness and discomfort that can escalate into serious pain when you start running. 

The upper of the TR31 is made of tough, stretch-resistant synthetic leather, and generous moisture-control mesh inserts provide plenty of breathability for hot summer days. Plush, seamless fabric lines the inside of the shoe to ensure sock-free comfort.

The Shimano SH-TR31 Shoes are compatible with three-bolt cleat designs, as well as two-bolt SPD pedals when paired with Shimano's SM-SH40 adapter. They come in whole sizes from 36-52 and in the color White/black.