"Going against the grain of technology might seem counter intuitive, but we think there's something to be said for the classics. That's not to say that we're not all-for progress, but we think there's a great balance that can be achieved when we embrace a bit of both timeless and progressive technology into one piece, just like we find in Giro's Empire ACC Cycling Shoe. With a balance of lace-up tidy aesthetics and featherweight carbon soles, the Empire ACC soars forward with an ""everything old is new again"" attitude that combines the best of both worlds. Starting at the uppers, they were wrapped with one piece of Evofiber microfiber. This fabric is exceptionally lightweight and highly breathable, featuring perforations for added cooling. This contributes not only to the sleek, wind-cheating profile, but it also reduces weight. And while the shoes might not appear to be very supportive, the opposite is actually true. Because of the flexibility of the microfiber, as well as the classic lace system, the shoes are able to be tied so that they fit your feet like a second skin. Adding to this is the ultralight and ultra-stiff Easton EC90 ACC Carbon Sole. One of the stiffest soles in the industry, it features a low 6. 5mm stack height that mates with the uppers for unrivaled power transfer. The lower the stack height, the closer the cleats, and thereby your feet, are to the pedals. This minimizes power loss that occurs with thicker cleat plates. The footbed provided is an adjustable SuperNatural Fit Kit. It allows you to fine-tune support to where your feet need it the most. Additionally, it was constructed with X-Static Antimicrobial fiber to keep odors and bacteria at bay."