Heat up in 3 seconds without power - Whenever and wherever heat is needed, snap on the internal metal plate and for 3 seconds, the hand warmer releases heat up to 131 degrees Fahrenheit (55 degrees Celsius), producing lasting heat for up to 30 minutes.
Reusable - Unlike single-use heating packs,NWK hand warmers are completely reusable! Simply drop them into boiling water for a quick charge and start using them. Good for the planet and your wallet, you'll always get the relaxation you need.
Dozens of uses - can be put in your pocket for winter sports, outdoor activities or cold weather activities, or even simple heat therapy to relieve joint pain, muscle soreness, use as a hot stone treatment and more.