I got out my Airwalks. Un-laced them, laced them really, really loosely and Tied them so that my shoes (with up to three layers of sockage) will slide on and off without a problem. Haven't had a problem since. 1 degree this morning with about 20 minutes of cycling and 15 minutes of standing around waiting for a bus. All I had on my feet was a layer of cotton, a layer of wool and these loose shoes. Worked like a champ.