I used to have a pair of winter bike shoes, they were never all that warm, I was disappointed and very expensive for the two or three months I'd be using them, and I gave them away. Even worse, bike shoe covers are all too small (my feet are Euro size 46 or US size 12) and they all have that ridiculous rear closure. So you have to put on your shoes, then pull on undersized neoprene shoe covers, and then fasten them in the back. Why can't someone make a shoe cover that one can leave on the shoe, and make them warm enough to really matter? I really enjoy riding in the winter, except for this.