Effectively maintain the internal hygiene of the mask and prolong the use time of the mask.
Prevent droplets and water vapor from penetrating, keep dry and not stuffy
Can be used by both adults and children
Can be used with (fabric masks, flat masks, three-dimensional masks)
How to use
Wear it directly after padding, easy and convenient!
Please take gloves or alcohol to sterilize your hands before taking this product.
Dimensions: 20*12+-5% (Size can be cut by yourself)