I haven't managed to get them on yet, as I'm extremely worried they'll either split or damage my shoes. I bought size 9-12, the biggest available, and I'm a size 9.
They are just crazy small, I realise they need to fit tightly, but seriously this is ridiculous. They do look like they will grip well however, but as I can't get them on, and have probably missed all the snow this year I can't really review them. Perhaps a soak in hot water will make them more malleable, but really too small for the size stated.