7 # (head circumference 55.8cm)7 # 1/8 (head circumference 56.8cm)7 # 1/4 (head circumference 57.7cm) QC 7 # 3/8 (head circumference 58.7cm) QC 7 # 1/2 (head circumference 59.6cm) QC 7 # 5/8 (head circumference 60.6cm)7 # 3/4 (head circumference 61.5cm)