This pattern is one size bandana made with filet stitch. Pattern desribes how to add beads. It has crochet scheme, pattern description and a graph. You need one skein of viscose or cotton yarn and a few beads if you want them too. You will need 2.0 or 2.5 mm crochet hook - the bigger the hook, the bigger bandana.
I used 2.0 mm crochet hook with loose tension.