If I could give these six stars, I would. These are simply the most comfortable athletic/running shoes I've ever had. I have significant arthritis in my big toes, so getting a shoe that doesn't put pressure on that joint is difficult at best. These shoes fit perfectly. I have been through many pairs over the last few years. I regret that La Sportiva no longer sells the grey/black/yellow model in the US, but whatever the color, they all feel great. The Gore Tex versions fit differently and are a bit snugger than the regular ones--they do put  a certain amount of pressure on my joints. If you have foot issues and want the Gore Tex versions, you might consider upsizing 1/2 size. Highly highly recommended.