Out of curiosity, how does a gaiter make it worse? i wouldn't wear one anyway but i just wonder why that is the case. Thanks
According to Duke University study:
Least effective, however, were bandanas, knitted masks and neck fleeces (also called gaiter masks), the latter of which may be worse than wearing no mask at all. The researchers found that neck fleeces actually dispersed more spray into the air, not less, because the material broke down larger respiratory droplets into smaller particles.
"Considering that smaller particles are airborne longer than large droplets (larger droplets sink faster), the use of such a mask might be counterproductive,” the study's researchers wrote.
The 5 Most Effective Masks
1. Fitted N95 (no exhalation valve)
2. 3-layer surgical mask
3. Cotton-polypropylene-cotton mask
4. 2-layer polypropylene mask
5. 2-layer cotton, pleated style mask (Researchers tested three different 2-layer cotton, pleated-style masks. See the full study for photos and specific design details of all masks tested.)
The 3 Least Effective Masks
1. Gaiter-type neck fleece
2. Double-layer bandana
3. Knitted mask
List provided by AARP article based on results of Duke University Study.
Researchers Rank Face Mask By Effectiveness
Note that AARP article includes a hyperlink to Duke University Study that I posted earlier today.
ETA Link to Duke University Study
Low-cost measurement of facemask efficacy for filtering expelled droplets during speech