Deep heat patch

1.Air-activated, out-put of heat by oxidation of Fe through micro-hole technology

2.Just open the sealed bag and stick or use the pad to anywhere** of your body that needs warmer, and it will heat automatically

3.8~20 hours of heating (different types apply to different duration of heating)

***** distributed heating: temperature ranges between 50-55 degrees Centigrade(or 122~131 degrees Fahrenheit) Highest temperature: 65 degrees Centigrade (or 154.4 degrees Fahrenheit