Carnac Eos Road Shoes. The divine fit of the Carnac Eos Road Cycling Shoe is the first thing you'll notice, but that's not all...they're made with soft synthetic P skin and micro mesh for comfort up top, and have an ultra stiff fiberglass sole for great energy transfer. Also, the I.A.I. Integrated Air Intake aeration system provides excellent ventilation from 3 air intakes and one large vent for air to escape from. Plus, Carnac's signature and interchangeable rubber heel cup is anatomic and asymmetrical, so it matches your heel perfectly a great fit and great comfort so you can keep hammering without worrying about some barking dogs.