Skills required: Chain, Slip stitch, Single crochet, Double crochet, Work in rounds.
Material needed:
• Yarn - Alize Alpaca Royal (15% wool, 55% acrylic, 30% alpaca) 100g/273 yards (250 m) per skein approx.: 80 g/ 220 yards (100 g/273 yards, 120 g/330 yards)
or Any Medium weight yarn size 4
• U.S. 7 (4.5 mm) crochet hook.
• U.S. 4 (3.5 mm) crochet hook.
• U.S. 4 (3,5 mm) double pointed needles (for I-cord)
• tapestry needle

Gauge: U.S. 4 (4.5 mm) crochet hook - 13 sc x 14 rows = 4 x 4 inches

The description is given for circle of the head :
• toddler (18-19 inches head circumference)
• child (20-21 inches head circumference)
• adult (22-23 inches head circumference)