I work in a food distribution warehouse, part of which is a huge freezer. It's 10 to 20 degrees below zero on an average day. Pretty cold... If anyone has experience working in a freezer, or just being in an environment that cold, how do you keep your hands warm? Seems like no matter what I do, my hands always get frozen after a while. 3 different glove layers, along with multiple heat-packs. It just isn't enough.