I use these shoes for 2 years and I am very satisfied. This is one of the first natural racing models with a thin sole for improved ground contact and sensations. The shoe is very comfortable barefoot as with socks and has a high breathability. Originally purchased for running, I also traveled door to walking as for the city. Very strong and lightweight, they are great for walking in the tropics and have not changed despite the difficult conditions (Laos during the monsoon). The sole still holding up despite heavy use. Machine wash cold wool cycle without problems.
However, they are not very waterproof and slip on wet stones and asphalt. Furthermore, the absence of amortized by reassessing how to set foot on the ground, what is the purpose of these shoes. You probably quite feel your calves and the Achilles heel in the early days. Some settings so to enjoy it. They are well worth the effort!