Shimano Men's RC703 Wide Cycling Shoe General Accessories-Nutrition-Supplements Microfin is a short blade

Microfin is a short blade training fin for a leg muscle work out

For the modern 9- and 10-speed chains

Extremely well-ventilated

double-knit fabric to keep you dry and back ventilation panel

While the PR 3

Shimano Men's RC703 Wide Cycling Shoe General Accessories-Nutrition-Supplements Microfin is a short bladeThe updated RC703 is a race ready road cycling shoe thats lightweight, comfortable, and designed to help keep you at the front of the pack Optimal Efficiency: Low stack height midsole, refined instep straps, and new Power Zone lace guides provide stable pedaling platform for enhanced power transfer Breathability: Synthetic leather upper with strategically placed perforations increases ventilation, keeping you cool and comfortable when the race is on