Printed on a Bella+Canvas TT044 2 layer mask in “Black” made of 52% cotton, 48% polyester for a super soft feel.
Masks are final sale and not exchangeable. The manufacturer specs are available here: https://www.bellacanvas.com/spec/BC_TT044_FaceMask.pdf. They provide quite a few measurements (in inches) so you can check them against any mask that you may have already. However, the L mask will fit most adults and the S mask will fit most kids. The S mask will also fit adults with petite faces but bear in mind that it is a small mask really meant for kids. The mask has some stretch in it but the ear loops are not stretchy material so you may struggle to wear the size S if your face is too big for it.
This video is completely unrelated to our company but it shows a short look at the same mask blank around the 2:22 mark:
Note that this is not a surgical or medical mask. However, it can be washed with your laundry for re-use and to comply with local or business regulations.