Reusable Hot Pack,Gel Hot Pack,Heat Pack Therapy

Reusable Instant Hot Pack,Instant Hot Pack 1.CE,SGS,MSDS,EN71,FDA 2.Non-toxic,non-caustic,reusable 3.Eco-friendly 4.OEM To help keep your hands warm this winter, we bring you the perfect hand warmer. But unlike most hand warmers, this one you can use over and over again. And, you don't have to pop it in the microwave to heat up. The magic with the hand warmer is in the metal disc you see inside it. All you do is click the disc back and forth a few times and you'll see the gel inside become opaque. As the opaqueness spreads, so does the heat! In brief,bending the disc starts an exothermic crystallization of the gel (i.e. it goes opaque and gets hot). And when it loses its warmth, all you have to do is wrap it in a towel and throw it into boiling water for about 3-5 minutes until it turns into fluid again. Once it cools off from its boiling bath, it is ready to be used again.