Reusable hand warmers are quick and easy to use! The floating “button” quickly releases heat that lasts for hours. Immersing in boiling water reactivates the heating mechanism so you can use them again and again. Crafted from premium material, our hand warmers are engineered to withstand the harshest of winters. Also functioning as reusable heat packs for food and small heat packs for pain relief, they are eco-conscious and eliminate the need for disposable alternatives.