I am definitely a fair, warm weather rider. Wanting to keep some sense of outdoor activity this coming winter I bought these booties to keep my feet warm. My road shoes are vented, so I needed something to keep the air out and the warmth in. I could no be happier with these cover, I have taken them in a few mid 30 degree F rides and my feet have been extremely comfortable.
These are a good value and work well, I did no care about water proof because I do not plan on any wet winter riding.
I use these for "cold" rides from 40-55 degrees Fahrenheit. They look great, and they are well insulated so quite warm. I wear size 45 shoes and ordered the L/XL and they BARELY fit over the shoes. Inside they say they are for Euro size 40-44. I don't think that information was available when I ordered them.
These shoe covers work just as advertised. Keep your dogs warm and dry with easy on and off due to full length zipper in the back. Throw 'em in the laundry to wash off the mud and crud. The stretchy material provides for a nice fit over my regular Shimano shoes. I wear a size 12US, 46Eu and the size 2XL shoecover fits great.
I needed new shoecovers for my MTB shoes because I do a lot of gravel riding, and these fit the bill perfectly. My feet stay dry on 3-4 hour rides, which is exactly what I was looking for.