Fiber Trends design by Bev Galeskas . Quick to crochet in bulky yarn and a size N hook, these slippers have double soles for wearing comfort. Sizes: Women's sm, med and lg / men's med and lg. To fit approximately US size 5/6 (7/8, 9/10 /10/11, 12/13). Exact finished size can be controlled during felting. Yarn Requirements: Slippers are made with a single strand of bulky weight wool. Crochet can be a bit harder to felt than knitting so it is important to choose a wool that felts easily. Yardage: Approximately 330 (420, 510 / 620, 710) yards (302 (384, 466 / 567, 649) meters per pair. For 2-color slippers you will need about half of your yardage in each color. A contrasting cuff requires 10 to 12 yards (9 to11 meters). Optional: Fiber Trends Suede Slipper Soles or 2-piece Slipper Bottoms will add traction and longer durability. Needle Felting Supplies: Fiber Trends' Natural Roving Pack, Felting Needle Assortment Pack or Needle Felting Starter Kit.