ILO Aviator Hat Size Chart

Age Circumference
0 - 6 Months 44cm
6 - 12 Months 47cm
12 - 36 Months 51cm
2 - 4 Years 54cm
3 - 5 Years 56cm



What size should you get?

If your baby is at the starting age of one of our sizes, then go for that one. If they fall in between sizes and they’re not on the small side, then go for the size above. The aviator hat is snug around the widest part of the head, but the fabric stretches as they grow.

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