So far I've got about 200 miles on these boot covers and they do a great job keeping your feet dry and warm I feel that the sizing was a bit off for order the size recommended and it's a very very tight fit how to stretch to get onto my shoes shoes. Overall I would recommend.
I use these in typical Portland wet weather. They are easy to put on, which is a plus. I had to size up to an XL, tho, my shoe size is a Sidi 45. And they work easily with my mountain cleats. The disadvantage is the entire bottom is exposed, so, water eventually soaks my feet from the bottom up.
The fit was a little tricky around the ankle closure. This was my size but they felt a tiny bit small. They did however, do their job and warm and dry.
No surprises here.