Yardage: 601 - 656 yards (550 - 600 m) used double-stranded, 5.0 mm (H) hook.Sizes: Ladies size 6 to 9, narrow and wide width.
US crochet terminology.
Slipper booties are worked seamlessly from the top-up and then felted to size. It is important to use 100% wool yarn to felt project successfully, "superwash" will not felt.