I dislike gauge, so I generally do not list it on my patterns. This pattern is no different. It is meant to be worked, using whatever yarn you prefer, using the appropriate hook for the yarn. Generally, if you use a worsted weight yarn and an “I”crochet hook, you will arrive at approximately the same size I did. However, since all headphones are not created equal, this pattern is merely meant to be a guide.

Pattern available as a PDF download in my Etsy shop.