How and Why to Double-Mask
2:00
Wearing two masks can block 92.5 percent of particles. Scientist Linsey Marr shows you how to properly double-mask. For more information, go to aarp.org/coronavirus.
Wearing two masks can block 92.5 percent of particles. Scientist Linsey Marr shows you how to properly double-mask. For more information, go to aarp.org/coronavirus.
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