Easy to useand quick to heat, each hand warmer package contains an internal CD activation.Twist it back and forth a few times. You'll see that the clear gel insidebecomes opaque. When the temperature reaches 55 degrees, you can feel thewarmth of the hand warmer. Put it in your coat pocket and knead it in yourpocket with your hands so that the heat is retained. It won't work if you'rewearing thick gloves, so you have to take them off when you're using it.
The hightemperature lasts about 40-60 minutes. They are completely reusable. When itloses heat, they can be reset simply by placing them in boiling water for about5 minutes (the crystals are completely liquefied). Once it has cooled from theboiling water, it is ready to be used again. They are an alternative tosingle-use packaging and can save you money. The application scenarios of handwarmers are very rich and diverse. You can use hand warmers in any of thefollowing situations, such as camping, fishing, soccer and soccer games,hiking, diving, and dog walking. This hand warmer is very portable and easy touse, and will meet most of your outdoor heating needs. They're a lot hotterthan most hand warmers, and they're really fun to use and show off to others