CROCHET PATTERN ONLY!! PDF Instructions with pictures included on how to crochet this adorable Sandworm Hat. This pattern is for an adult sized hat. Upon your purchase, a PDF download will be delivered to your email account. You will need to download this from a desktop. If you are on your cellphone, you may be able to download the PDF by setting your browser into desktop view. This hat can be machine washed and dried when needed.