This crochet diamond hat pattern has a very flexible brim. That’s why it comes in two sizes. It’s made in small and large. Although it comes in two sizes, you can easily adjust it to your own. This crochet diamond hat pattern also has a crochet cowl. If you want, you can make a set of both and have a perfect winter accessory. After you’ve finished your crochet hat, add a plush pompom to the tip to make it more stylish. Also, if you want a tighter crochet beanie, there are special instructions for that.