This crochet happy little hippopotamus hat is super cute and perfect for keeping your little one warm! In fact, it’s great for anyone, any age! Hippo crochet projects can add a focal point to a specific area in the home and are great little conversation starters. Get crafty now ! Materials: Worsted weight yarn. Size H Crochet Hook Tapestry needle 2 small black buttons 2 purple buttons (optional)