• Wolly small: Head circumference: 40 – 45 cm / Age: ca. 3 – 12 months
  • Wolly medium: Head circumference: 45 – 50 cm / Age: ca. 12 – 24 months
  • Wolly large: Head circumference: 50 – 54 cm / Age: ca. 2 – 4 years
  • Calvin: Head circumference: 48 – 55 cm / Age: ca. 2 – 10 years