I've only been running on them for a few days, so I'm not completely sure how I feel yet. I do like the "spring" and bounce of the soles. The toe area is very narrow. I actually wear a 7 12 shoe, but always get a 1/2 size up for running. The first time I ran in them, my toes felt super squished. I changed socks and they're a little better. I might try an 8 1/2 next time or see if they have a model that isn't so narrow in the toe area.