Three-dimensional mask (3D mask) -You can put non-woven or kitchen paper in the mask!
Sew the lining
Sew the lining in the same way as the front fabric.
Then fold and sew the bottom side of the sewn fabric.
About lining fabric
The lining fabric in the photo is double gauze.
Double gauze is soft to the touch and light. It is breathable and easy to breathe.
You can put non-woven fabric (kitchen paper when there is no non-woven fabric) in the mask.
In addition, there are various products (filters) made of non-woven fabric, so let’s search for them.
However, this double gauze is currently out of stock and it is hard to buy.
If you can’t buy double gauze, use a fabric that is thin and feels good (such as cotton).