I own Floopi slippers as well as the boots. I ordered a size larger because of the reviews, but they are a little big. Not so large that I would return them. I love my slippers and I am sure I will love my boots.
I normally wear a 6 to 6.5 so I ordered a 7. They fit well so I suggest ordering a size larger than you normally wear. Only complaint is that they are too roomy on the top of my foot and ankle area (and I have a high arch) otherwise would be five stars.
I love these boots. Very very comfortable! I ordered a half size larger and they fit but probably should have ordered a whole size larger. They do run small but well worth it and excellent quality. I definitely recommend them and i will buy another pair for sure! Ty ty