I have used this spray on my winter boots just before going to Austria for a skiing holiday. It worked really well, my feet never got wet, even though the shoes let water in before! Highly recommended!
Bought this for my winter fabric boots, so quick and easy to use, just had to wipe over my boots with damp cloth and then spray them from about 3 - 5 cms away, you need to blot gently any excess blobs. Very effective.