For this hat I used Lion Brand Ice Cream Crème Glacée. Color: Cookies and Cream. (I had this yarn laying around in my studio for awhile so I’m not sure if it’s still being sold. It’s a medium weight yarn a bit lighter than WW yarn, but I think you will do just as well with WW. I used a size G/6/4.25MM hook, but an H/8/5mm would work as well.