The 3×5 is great as a hand warmer, in pockets, under beanies, and works great for spot treatment, arthritis, poor circulation and hot stone massage. The 3×5 lasts about an hour depending on how well you insulate it. You can also use the heat pack as a cold pack. Just place it in the freezer for up to one hour and it will stay soft and flexible.
Part Number: 35H
3x5 Heat pack "HotShotz" Hand warmer (7.6X12.7cm)