This is REALLY EASY and comfortable, too.
1. Cut the hem off a T shirt. Discard.
2. Cut 2 – one inch strips for ties.
3. Cut strip the size mask you want. See shot below. You will have two.
4. Trim the sides to remove seams and straighten them.
5. Take one mask and place ties at 1/3 rds as shown in shot below. Tie top.
6. Fold sides in, overlapping.
7. Pick up and place top edge under loop over nose, pulling knot to top of head.
8. Cinch sides and pull bottom of ties behind head and secure.