Shoe dilemma

So it looks as if Autumn is here to stay and with that the wet weather.
This poses a slight footwear dilemma for my dog walking apparel.

I have walking sandals for hot, dry weather, trainers for cooler walks and furry boots for extreme Winter conditions... but I don't have anything for cooler, wet weather...
When I mentioned that I might have to buy some water proof walking boots, Mr O raised his eye brows slightly. I guess he thought I could find something suitable among the other 50 odd pairs of shoes I have... he just doesn't understand...