Disposable. Pocket-sized. Up to 20 hours of heat. Heats instantly when it comes into contact with air.
When the airtight plastic bag these warmers are stored in is opened and the soft warmers are exposed to air, they begin to heat up. Within minutes, they reach a comfortable warm temperature and can be place in gloves or socks to help keep extremities warm. Invaluable aids against frostbite, these warmers are a must during winter disasters.