Whenever there is some colder weather in the forecast, it's good to know about Arctic Shield Boot Insulators. They are lightweight and easily packable. You can roll them up, stuff them in your pack, or do what I do which is I stuff one inside the other and I clip it to the outside of the pack. They have Arctic Shields Retain™ heat retention technology, which is an aluminized layer that reflects your body heat back and they work amazingly well. This allows you to wear lighter boots, lighter socks, be stealthy, or sneak in and out more comfortably. Then, once you get in the stand, you can cover your feet up with these. It allows you to sit all day and stay comfortable.
-- Midwest Whitetail