Donna Druchunas, author of "How to Knit Socks That Fit", is the author of six knitting books, including "Arctic Lace", "Successful Lace Knitting", "Kitty Knits", and "Ethnic Knitting Exploration". She teaches knitting workshops in the United States, Canada, and Europe and has three online sock-knitting classes with more than 25,000 students on Craftsy. She lives in Vermont with her husband, mother, and three cats, who all help her test the usability and comfort of her finished knitted items. Druchunas s website is www.sheeptoshawl.com.