Are you new to the joys of cables? If you answered YES! then this is the beginner hat for you! I made this hat to run in, so the Cascade Sierra 80% pima cotton, 20% wool mix is perfect! But any worsted weight yarn should do the trick. Also, since it has to remain on my head while I am running along, it is probably not as ‘slouchy’ as it could be, but I love the fit and think you will too.