HotHands super warmers are ready to use, air activated, and last up to 18 hours using natural heat. To use, simply remove the warmer from its package and shake it to activate it. When you’re done, simply toss it in the garbage – no special disposal required. <BR><BR><SPAN style='font-weight:bold;'>Product Features:</SPAN><BR><BR><DIV> <LI>Great for tailgates, outdoor sporting events, hunting, fishing, camping, hiking or anything else in the cold <LI>Convenient, compact and portable <LI>Provides safe, natural and long-lasting heat <LI>Heats up in 15-30 minutes and lasts up to 18 hours <LI>Keep jacket liner or other cloth between you and the warmer: Do not apply directly to the skin <LI>Includes 50 single-use super warmers </DIV>