That's why I said it really depends on the person. Multiple sicks, 1 sock, good socks, or not, my feet personally just can't stay warm in them. Mine barely stays warm in highly rated insulated winter boots. I just wanted it to be known that what works for one doesn't always work for everyone. It also depends on what you're doing in the shoes, when your up working and walking around your feet will stay warmer no matter what shoe vs. Just going grocery shopping for 20 minutes