I really like my old (now discontinued) laceless 801 clogs but needed a replacement. Whatever your normal NB shoe size is, they should fit them (I'm usually a 10.5 in NB and have tried 10.5 and 11 in these - 10.5 was the best). They fit differently than the 801s, however, as the heel kicks back more and the shoe feels slightly narrower (although both are D-width). It's just a different design, you just have to get used to it. The new ones are more modern, so optically better.