Oobi Hat Sizing for Kids and Women:
Every hat has the exact measurements in the product specific size guide.
However this is an easy rule of thumb:
Size S-M - 52 cm - size 2Y-3Y
Size M-L - 54 cm - size 3Y - 6Y
Size L-XL - 56 cm - size 7Y to Teenager
Size M-L - 54 cm - size 3Y - 6Y
Size L-XL - 56 cm - size 7Y to Teenager
Women's size S-M - for 'average' head sizes
Women's size L - XL - if you have a lot of hair or a slightly larger head circumference.
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For all Oobi Hat sizing please check the individual products. To get the best fit for your little one, using a tape measure, place it around the widest part of their head, approximately one inch above the eyebrows. The tape measure should go around where the hat will sit. If your child's head size fits in between sizes, choose the larger size for comfort.
For Women's Sun Hat info and measurements, the above is the same. For the perfect fit, measure your head at the part where you'd like the brim to sit. Then use that info to choose your perfect hat size.
Generally speaking though we recommend a S-M for a small or average sized head. A L-XL if you have lots of hair or you feel like your head might be above average in size.