HotShotz heat packs are instant, portable, reusable, non-toxic and 100% MADE IN THE U.S.A.! With the push of a button your HotShotz heat pack will instantly crystallize as it heats up to 130 degrees. It can be activated over and over again. HotShotz come in a variety of shapes and sizes including hand warmers, lower back straps, neck & shoulder wraps, face masks and stadium seat warmers. They are perfect for all of your heat therapy needs. Neck & back pain, arthritis, menstrual cramps and so much more. They also work great as cold packs. Private label available.