I usually wear a 9 but ordered a 10 and they are comfortable with socks or without
937296
Review comments to size up were spot on. I usually wear a 9 but ordered a 10 and they are comfortable with socks or without, but I could see a smaller size being too snug.
4771579
I wear a size 9 in the flip flops but a size 10 in clog
1328721
I ordered a 10 but could have used 9 or 9 1/2. I inserted foot orthotics and all is good!  They are now super comfortable
431200
These are really comfortable BUT a 9 is too small and the 10 is too big! I'll keep the 10 as it realy is comfortable.
1996942
I love them. I wear a 9.5 for most shoes. I ordered 10 due to my high instep and they fit perfectly. I also have a wide calf and zipped works, but you can also leave unzipped the way they are made.
3712803
I wear a size 9 1/2 so I ordered these in a size 10 after reading other reviews about how they run small and they fit just right.
1985119
I am between a 7 and a 7 1/2 - since they don't come in 1/2 sizes, I ordered the 7 and the 8.  The 8 was too large but the 7 fit very nicely with a pair of socks.
3366848
These fit very comfortably, with or without socks. When I know that I will be wearing them for long periods of time I do opt for no-show socks. I'd definitely buy another pair.
3152708
I ordered 9.5 not knowing how this brand fit, probably should have gone with 9 but they are still very comfortable
4422326
I went with a  9 1/2 because I'm really about a 9 1/4 so they fit as expected - a tiny bit large but still comfortable.
1110391
I wear a 10 comfortably in most shoes. Usually boots I have to size up a little bit. These had a little extra room that made them honestly perfect for me. I love them, they're comfortable too! And they're really cute.
126765
I normally wear size 9.5. I ordered a 9 and it fits fine. 10 would have been too big. Very comfortable.
581471
I can wear between an 8 to a 9.  Looking at this shoe I ordered the 9 and it fits great.  Am actually thinking about getting another pair in a different color.
4739368
I typically wear a 9-1/2, but on whole sized available. The size 10 works just fine.
2559888
I take a 9 1/2.  Sometimes regular, sometimes wide.  These fit well, with regular socks (not thin dress socks or extra thick)
4910851
I usually wear an 8 or 8.5. I ordered these in a 9 so I could wear thick socks with them. They work well but a little smaller than I expected. They seem warm though and are very cute.
725820
In most shoes I wear a 71/2, but occasionally I wear an 8. After reading the reviews that said these boots ran a bit small, I ordered the 8 and I'm very glad I did.  The size is good, and with heavier socks the width is a bit snug. They take some effort to get on with no zipper, but once on they are comfortable.  I'm very happy with them.