Table 1. Information on the cloth facemask fabrics.
L1 and L2 indicate the two fabric layers in type II masks.
| Masks | Type of fabric | Masks | Type of fabric |
|---|---|---|---|
| M1 | polyester‒spandex | M9 | polsyeter‒spandex |
| M2 | cotton | M10 | polyester‒spandex |
| M3 | cotton‒spandex | M11 | cotton |
| M4 | rayon‒spandex | M12 | cotton |
| M5 | cotton‒spandex | M13 | cotton (L1) and polyester‒spandex (L2) |
| M6 | cotton | M14 | polyester‒spandex (L1) and rayon‒spandex (L2) |
| M7 | cotton‒spandex | M15 | cotton‒spandex (L1) and polyester (L2) |
| M8 | cotton‒polyester | M16 | cotton (L1) and cotton‒spandex (L2) |