I made this hat using the All Grown Up Striped Slouched Hat pattern. The pattern calls for the hat to be made using an aran yarn, but I used a double knit (a double knit is thinner than an aran). In order to be able to make the hat to fit my head, I only needed to change the length off the hat. I used a 5.5 mm (I) crochet hook and made the small adult size. I crocheted about 6 more rows in the stripe pattern than the pattern asked for.
The pattern was fairly easy to make, and I learned a new stitch as well as the best method (in my opinion) of making a brim. The pattern calls for the brim to be simultaneously made and attached to the hat, thus eliminating the hassle of sizing the brim to the hat and attaching it. I will definitely be using this brim method for all of my future crochet hats!