Phyllis nm

You can cut 1/2" elastic up the middle to make 2-1/4" pieces.

Surgical masks were most effective, but all of the materials offered some protection even against very small bacteriophages that are even smaller than coronavirus.8 Surgical masks were 89% effective against 0.02-micron bacteriophage particles, while other materials were rated as follows:
Vacuum cleaner bag — 86%
Dish towel — 73%
Cotton blend T-shirt — 70%
Antimicrobial pillowcase — 68%
Linen — 62%
Pillowcase — 57%
Silk — 54%
100% cotton T-shirt — 51%
Scarf — 49%