To crochet the mask, make a foundation chain of 40 chs or any other number of chs.
1st row – insert hook into 2nd ch from hook, sc to end + rc1
2nd row – insert hook into 2nd ch from hook, sc5, hdc to last 5chs; sc5 + rc1
Repeat the pattern starting from the 1st row. Crochet about 23 rows or as many as necessary.
After last sc row, chain two to pick up the height, dc1, [ch1, skip some space between rows, dc2] to end.
Work slip stitches to the other side, chain two to pick up the height, dc1, [ch1, skip some space between rows, dc2] to end.
Slip stitch to your half double crochet stitches, and then *chain 18. Join the 18 chs with a row before last one with slip stitch. Single crochet back reinforcing the very first and last chains. Slip stitch one. Repeat from * to make the second stripe.
Crochet two more stripes on the other side of the mask.
Make a foundation chain of about 152 chs, then single crochet back. Insert the tie between double crochets on both sides. Insert a cotton fabric between stripes (just like a belt) for more protection.
The mask should be washed after each use.