I have been professionally fitted for shoes and am a 8 M in running shoes. I ordered an 8 to start. Definitely too large. Heel slipped. I tried a 7.5, and there was still a ton of room between my toe and the top of the shoe, but my heel still slipped and it was not comfortable under the outer balls of my feet. I guess my feet just do not work with Salomon shoes. A &#34;star rating&#34; is required so I am giving three stars, as the shoe sounds wonderful for those who it fits, but it is frustrating that neither size works for me.