Best-in-Class Fit: Full surround laminated mesh upper is supple, durable, and integrates seamlessly with midsole for a snug and secure fit Lightweight and Stiff: Low stack height carbon reinforced midsole with stiffness level of 8 stabilizes your foot and transfers more power to your pedals Unrivaled Comfort: Synthetic leather and breathable TPU mesh upper keep you comfortable and dry on long rides, while BOA L6C dial closure promotes a perfectly personalized fit Multiple Options: Color choices include Black, White, and Cyber Blue, while sizes run standard 38-48 plus wide 40-48 Compatible with SPD-SL Cleats: Easily clip into SPD-SL pedals for optimal pedaling efficiency Boasting top-of-the-line race technology, the RC503 is a high-performance road cycling shoe without the high price tag. The breathable, lightweight upper provides all-around comfort and a superior fit, while the carbon-reinforced midsole delivers the kind of stiffness and stability you’d expect from a high-end cycling shoe.