all shoes and my feet change apparently? I have like 6 pair of Dansko - two tooled clogs in 40 one pair in 40 an this pair in a 41 as was my last pair of cabrio. It depends sometimes I wear a 9-10; sometimes the pull is too tight or you get a pair that pinches. I am using a shoe strecher on one pair for the tight spot. I will say the quality is non-comparable I will keep wearing this style in this brand forever! A cheaper alternative look is Sketcher for work slip resistant but order a size smaller than you actually wear. They are great too.