Estimated Price: $ 22
Source : http://images.search.yahoo.com/images/view;_ylt=A0PDoX9PaBBQNzEAiSyJzbkF;_ylu=X...
Just open the packets, shake the hand warmers and Hot Hands chemical reaction starts to warm the packets providing up to 10 hours of hand warming comfort. WARNING!: Do not place packets directly on bare skin as the chemical reaction make cause burns.