World Tour athletes and pros everywhere want pure performance with zero compromise. That's why they choose the SIDI Women's Wire Vent Carbon Road Shoes every time. 60g lighter than the Ergo 3 shoes, the Wire Vent Carbon features an improved sole with exceptional stiffness and vents that can be opened and closed for 4-season comfort. Adjustable Heel Security System gives you a perfect fit from the sole up, heel to toe, for all-day comfort you can rely on. Comfort Fit insoles with memory foam provides lightweight support, Soft Instep Closure System with padded tongue eliminates hot spots, and Tecno 3 buckles allow easy one-click adjustment in either direction for simple fine-tuning on the fly.