It was too big for an adult woman with a small face, I needed to buy the extra small - child equivalent mask.

Very good and definitely worth the money.
In summary:
Positives: good quality, withstands a lot of use and washing, the nose clip helps a lot with application and it is not too tight on the breath (considering that the air passes through 3 layers of fabric).
Negatives: the sizes are really all over the place.
I have bought medium and large sizes and really, some mediums don't fit even in small sizes and 2 larges don't fit the same person, etc.
Also, if the size is not right for you, the ear loops will most likely cut into your ears because they are VERY thin.
In short, it is a very good mask as long as you find the right size (which is difficult and a matter of luck since you cannot try the mask before buying it and even if you have tried the size, no one guarantees that the next large will be the same)

Perhaps the highest quality reusable mask on the market, with a filter, fits very well on the nose and mouth, while also covering the cheeks quite well. As long as you choose the right size, it doesn't come off when you speak. My mother and I wear size S, while my partner, who is slim but has a beard, found that size M fits better than L, which he initially purchased. It can be hand washed with warm water and soap and dries quickly. For additional protection, I carefully place them near the iron when it releases steam - they do not iron. The only negative is that the elastic bands are a bit tight and after a while, they can cause discomfort on the ears (but this problem can be solved with the adjustable straps available on the market - I have found affordable ones for 1 euro). Overall, a very good mask available in various colors, and I have noticed many people wearing them outside.

A little difficult to get used to because the air passes somewhat restricted due to the many layers it has, but really good.

For women with a slim face (not wide) size S, for men with strong features and a wide face size L. It reaches near the ears and covers the chin.

The mask is of high quality with double breathable fabric and an inner dense washable filter, which fits perfectly. The medium size is ideal for women and men with a regular face. The large size is significantly larger for people with a big head or wide face. I have been very satisfied. It requires attention because it cannot be ironed (should not touch the iron), but it can be sterilized with steam after washing.