Prepare for the cold months by slipping your feet into these warm and cozy slippers! Crochet with 3-5 balls of Plymouth Yarn Galway Worsted 100% wool yarn in 2 different colors using U.S. size I/9/5.5mm hook. The boots are designed to fit ladies’ shoe size 5-7 or 8-9, and men’s shoe size 10-11.