Actually the size 38(7.5-8) I had to return. They were way too big, despite me wearing a 7.5 shoe. I returned them for the same shoe size 37(6.5-7). I love these !! I avoided getting them because I once tried them on and my heel slipped up & down, the clerk helping me didn't know if that was normal or not. After reading many reviews, I decided to get the Pro XP clogs. I work in the medical field, am on my feet for 8 or more hours a day plus do a lot walking. I see so many doctors, nurses, residents wearing Dansko shoes, I felt there had to be something about these shoes. I wore them for a week around the house, running errands & such before wearing them to work. This is my second week wearing them at work and at the end of the day, my feet & knees do not ache. I love the extra cushion insoles in these shoes. Glad I went with the XP show. I use to wear NB 608 before the style was changed. It has taken me about 1 1/2 years to find a shoe that I can wear all day and not have achey knees or feet. This is the shoe for me !! I think I may order another pair so I can have a work pair & home pair.