I'm normally a size 11, but I bought these in 11 1/2 and they're the absolute perfect size. All my other running shoes are Nike so this was quite a departure for me, but I was looking for a kinder softer shoe with a little more width at the toe and this is it. Wow, I just ran 9 miles today and felt like I was wearing slippers. The cushioning is just right - and more than you'd expect. The feel of the uppers is soft and snug. And they feel lighter than my Nike Lunarglides. I'm super happy with these and plan to run the San Francisco marathon in them in late July.