COVID-19 mask use: How to make your mask fit properly

When layered with other recommended public health measures, a well-constructed, well-fitting and properly worn mask can help prevent you and others from being exposed to COVID-19. No matter which type of mask you are using, proper fit is a key factor in its effectiveness.

How to make your mask fit properly

Other ways to improve mask fit include:

General principles for mask fit

A well-fitting mask should:

Choosing a mask that fits properly

When choosing a mask, the fit is important. Keep in mind:

This advice is intended for the general public and is not intended for occupational health purposes, including health care settings.

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