![Ez Heat Handwarmer](http://sergeantben.com/cdn/shop/products/4813-4814-4816-hr4_{width}x.jpg?v=1424377620)
Will hold heat for 30-40 minutes. Produces up to 130F of heat in just 5 seconds. Instant Portable
3 inches X 4 inches
ISO 13485:2003 CERTIFIED
Cold Weather
Resusable- after each use, simply boil the heat pack to return the crystals to their liquid inchescharged inches state
USA