Here is a tip for you that is bullet proof. Purchase a pair of Boot Blankets and 4 large charcoal hand warmers ( about the size of your hand ). While still at home or deer camp open up all 4 hand warmers and throw 2 into each Boot Blanket. Then pack your Boot Blankets into your back pack and head to your stand.

Once in your stand remove your boots and slide your feet into the Boot Blankets. They will already be fully warmed up for you. Your feet will be warm and comfortable all day long.