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Why don't 3m anti-fog masks tighten their ears?
The 3M mask is a very airtight mask, which is very airtight. Many people feel uncomfortable wearing it because their ears are tight. Here you can recommend several ways to avoid ear strain. Such as the plastic clip below or the handle of the milk carton.

The first type: as shown in the figure! Fix it with this plastic clip and bring it to the back of your head, so that your ears will be liberated.

The second type: we use the handle of our milk box, as shown below ~

I hope these methods can help you and reduce the pain in your ears. If the ear is red, swollen or bruised, pay attention to disinfection in time ~