Cut it in half about 3-4 inches below the armhole.
Your DIY running face mask is ready to go!
In the next steps, I'll show you how to wear it.
Make sure the cut-part is on the bottom.
Put the face mask over nose so that the arm loops drape over your nose, and tighten over nose.
Take the bottom straps and tie a knot or loop behind your head, until your face mask feels comfortably secure.
You now have great DIY face mask for running that will not fall off of your face and allow you breathe normally during your run.