You should really try the toe warmers. They worked wonderful and don't take much space at all. They have an adhesive side that you stick to your sock and then slide your foot in your shoe. I've heard, not sure if it's true though, that if you put them in a zip lock bag afterward you can use them again. They're activated by the air and last 6 hours. If you haven't tried them yet, I would highly recommend it. If you're commuting daily though, it could get a little priceyOriginally Posted by Geonz