Instant heat pack Forget cold hands with this compact hand warmer, which can be reactivated up to 100 times. Great idea for promotion and gifts To use: 1. hold the disc and bend it slightly to and fro until you hear a “clicking” sound. Within a couple of seconds a reaction will occur within the gel that makes the item warm up and solidity. 2. To retain this heat put the warmer in a glove or a pocket. The warmer will stay hot for up to 20-30 minutes and stay warm for up to 60 minutes. Re-activation: place the hot pack in boiling water with cloth below for approximately 5 minutes or until the crystals are completely liquefied. When the pack cools down, it is ready to use again. Green Product Yes