This question seems to be referring to how to improve the fit of a face mask by knotting and tucking the ear loops. Here's how to do that:
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Secure the Mask: Place the ear loops around your ears as you normally would to wear the mask.
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Adjust for Fit: Make sure there are no gaps around your nose and cheeks for optimal protection. The following steps are how to achieve this.
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Knot the Ear Loops: Tie a knot in each ear loop, as close to the mask as is comfortable. This will shorten the loops.
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Tuck and Adjust: Tuck any excess material from the ear loops into the sides of the mask to further improve the fit and seal.
This technique aims to reduce gaps and ensure a snug fit, enhancing the mask's effectiveness.