I think this is for people who aren't good with carbon shoes. I've used them for about 20km in a test run, and there's almost no damage to the outsole. There's some dirt that I just can't get off. "Carbon Plate Built-in Zero Drop Shoes" Vanish Carbon is a racing shoe that incorporates a carbon plate into a highly responsive midsole, based on ALTRA's signature zero-drop and foot-shape toe box. Unlike the previous model, the carbon plate is now placed throughout the entire length of the shoe. This provides even greater propulsion and encourages natural forward movement, while also achieving a lightweight, flexible, and stable running feel. Flexibility is improved by 75%, and stability is improved by 14%. In addition, the "ALTRA EGO PRO" midsole continues to be used, providing high rebound and energy efficiency. By increasing the stack height from 33 to 36 from the previous model, cushioning has improved by 32%. "Vanish Carbon 2" is designed to unlock the runner's potential and support evolution to the next level through its innovative combination of a "highly responsive midsole" and a "carbon plate." Type...Running Shoes Gender...Men