I purchased these shoes about a year ago to improve my form when running indoors and outdoors. For the first several weeks that I used them while running, I was pretty achy around the legs (given that it was my first time running in a different way and using a different set of muscles, that was to be expected). However, those initial aches went away, and now I'm running regularly with these shoes and really enjoy the experience.

The only thing I wasn't crazy about was that, although they were true to size (I'm a size 38 and purchased a 38), the back of the shoes were tearing at the back of my ankles for some reason. I purchased some heel pads that fixed the problem, though I wish I didn't have that problem in the first place!

Overall, I've loved these shoes and would definitely buy them again in the future.