Usually, self-heating insoles are disposable, and each heating lasts about 10- 15 hours. When using the self-heating insole, you should not directly contact the skin at first. The best way is to stick it directly on the shoes. In addition, the self-heating insole is not suitable for use with other heating tools. If the self-heating insole has been attached to the body, never use heaters and other equipment to avoid local overheating and burning the skin.

Extended data:

Suitable for people who use self-heating insoles:

1, the elderly, children, women, people with poor blood circulation and other people who are afraid of cold in winter should pay attention. Children should not use it for too long, and it is best not to use it because children exercise a lot. ?

2, need to work outdoors, electric power, security, oil exploration, sanitation, shipbuilding, construction, etc.

3. Outdoor athletes, mountaineers, skiers, cyclists, fishing enthusiasts, etc.

4. People who work outdoors for a long time in winter, such as traffic police patrolling and troops standing guard. ?

People's Network-"Warm Artifact" is coming. These ideas make winter warmer.