Quote Originally Posted by OakLeaf View Post
#1 rule of warm feet is nothing can be even the slightest bit tight. You may find that your feet are warmer in thin summer socks, if thick socks take up too much room in your shoes.

In a pinch you can put plastic bags over your socks, inside your shoes. It's amazing how much warmer your feet stay just from blocking the wind.
My shoes are actually a hair large. LG doesn't make half-sizes in their smaller end of the sizing range, so I really need a 39.5, but am in a 40--which works well with heavier socks. Definitely not an issue of shoes being too snug.

The toe covers I had on today probably serve the same purpose. They were great a few weeks back when we did a ride on a day that was 55 or so. I definitely noticed that loss of 7º.

I may look into full shoe covers...that makes sense that they would fit better, overall.