This yarn bomber’s mask was designed for 4 framed web-comic for knitters “Here comes Yarn Bombers! ” which is new season of “Shuei’s knitting Note”

This mask needs knitting needle and crochet hook both.
Crochet hook for mask’s string, but you can make string with knitting needle using i-cord or CO-BO method :D

But I prefer to use crochet hook , because crochet stitches gives more strength.