Giro Prolight SLX Shoe - Men's Easton EC90 SLX high-modulus carbon outsole for ultimate stiffness-to-weight, vibration-damping and power transfer Teijin AG100 microfiber upper is extremely lightweight, tough and conforms to your foot for a snug fit SuperNatural Fit Kit is a cycling-specific footbed which allows you to customize the level of arch support for enhanced power, efficiency and comfort X-Static antimicrobial fiber footbed construction blends comfortable cushioning with effective moisture management An additional footbed, the ultralight EPP with X-Static antimicrobial fiber, offers a supportive, precise fit