You know those thick, blue shop towels that people like mechanics use? Turns out, those may be a better fabric to use for homemade masks than cotton fabric.

Three clothing designers got together, and tested dozens of different fabrics to see which ones would be better at filtering out particles.

We spent a few days researching and brainstorming any material that could filter: coffee filters, batting, window shades, Swiffer, interfacing, etc., all the way to more technical materials that are available to specialized industrial sectors like aviation, oil refinery, medical fields
Chloe Schempf to Business Insider

The cotton was HIGHLY permeable. This means we can breathe when wearing cotton masks, but they may not be as effective as we need them to be to protect us from the virus.

When tested, the cotton only blocked out 20% to 60% of particles.

Vacuum filters worked REALLY well, but you could hardly breathe at all when wearing a mask that contained these filters.

Breathing is still pretty important.
What the designers found, however, was that those thick blue shop towels, when doubled, and sewn into a tight-fitting mask, blocked out 95% of particles.
You could also breathe through them!
This affirms that SOMETHING is better than NOTHING, but cotton, by itself, is probably not the best choice for a face mask when given an option.
Those blue shop towels, though, may be the best choice yet!
The three designers who ran the tests on the fabrics, are trying to raise money to test the blue shop towels against the virus, itself.

If they, in fact work, these Blue Shop Towels may become the next answer to helping protect medical personnel and people — like you and me — from the virus.
Jacki Pash
Monday 3rd of August 2020
Thanks for the marvelous posting! I quite enjoyed reading it,
https://outdoortoysfortoddlers.com/
Maureen Keane
Tuesday 21st of April 2020
All the pictures are of Scott's shop towels and yet the people who tested the products specifically said Scott:"s towels were not as effective. Go to the source people. Only two brands of towels tested as effective.
Kay glessner
Sunday 19th of April 2020
are shop towels washable by hand with Dawn
Kelly
Friday 17th of April 2020
Hi. I work with the homeless and people are making masks out of blue.shop towels for them....they seem.great but how can I find out about he safety of the towels themselves??
Rose
Sunday 19th of April 2020
Is fabric safe using car shop towels, like Zep, Tool Box, for face masks?
Is fabric safe to inhale?
SuperMask
Thursday 16th of April 2020
All U need is here, GO TO THE SOURCE: https://cdn.shopify.com/s/files/1/0050/2474/3524/files/Suay_Mask_Pattern_1.1_daeed3cb-f82b-4899-b9bd-720e664b0316.pdf?v=1586816593