The style of these boots is great, they are chic and simple as far as rainboots go (I have the plain matte black ones).
However, they fit very small. I originally got an 8, which is my normal size and I could fit into them with a bit of difficulty. I didn't mind the snugness when I commuted via subway, I felt secure running on and off the train with them (clunkier boots I found to be unsafe when dashing on and off the subway trains and in and out of stations).
I finally sold the size 8s and ordered a size 9 to have a bit more room and they're honestly still a little small. Small in the foot, the ankle, the calf (I am a small-average sized person). I don't need rainboots often enough for this to be a huge problem but definitely consider these things before purchasing.