On very cold day, I will wear whatever gloves I so happen to have at the time. But, I take along a pack of 6 "Hothands" with me. The smaller ones fit right between my glove and the palm of my hand. When the finger start to get a little chilly, I just pull them out of the fingerlets, and hold on to the packet. I put them in before I leave the truck, so they are already warm when I need them.