Medium skills. Crochet back and forth. You need yarn (Mirasol Yarn Tupa is DK, 8 ply, 11 wpi. You need 100 grams, 250 meters or 274 yards, and Viking Raggen, Worsted, 10 ply, 9 wpi. You need 210 grams for the smallest, and for the biggest approximately 300 grams, that is 449,9 meters or 492 yards) and a crochet hook (5,5 mm/US I). Two sizes. The pictures are of the smallest. Written pattern.