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SIZE CHARTS - Helmets
Head circumference. 47cm - 48cm. 49cm - 50cm. 51cm - 52cm. 53cm - 54cm. Youth MTB. Size. Head circumference. Half-Shell Helmets. Thunderball - Adults. Size.
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Birth to 36 months: Girls, Head circumference-for-age and
Head circumference-for-age and. Weight-for-length percentiles. NAME. RECORD #. 12. Birth. 3. 12. 9. 6. 18. 21. 24. 27. 30. 33. 36. 15. 52. 50. 48. 46. 44. 42.
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Data Table of Infant Head Circumference-for-age Charts
Males, Birth 36 Months. Age (in months), 3rd Percentile Head Circumference (in centimeters), 5th Percentile Head Circumference (in centimeters)
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