Design by Bev Galeskas. Quick to crochet with a large hook, then felt for a thick, warm hat. Will fit most adult head sizes. Exact Finished size is controlled during felting and blocking. Block your hat over a hat form, bowl or ball that measures slightly larger than your head. Heavy worsted weight yarn that felts easily. Hats can also be made using 2 strands of yarn such as a DK weight wool held with a strand of mohair. This is enough to make the wide brim style, other styles will require slightly less yardage.