That's right, they are crochet Fair Isle! This technique uses special crochet stitches to create a Fair Isle-like appearance.
This free crochet pattern uses Worsted-weight yarn. Pattern attributes and techniques include: In-the-round.
SIZES to fit:
US: 5/6½ - 7½/9 - 9½/10½
EU: 35/37 - 38/40 – 41/43
Foot length: 22 - 24 - 27 cm / 8¾''-9½''-10½''
This free crochet pattern uses Bulky or Worsted-weight yarns.