Size Chart

Please measure above ears where a hat band would sit with a soft measuring tape or a string, then measure the string. Please take age into consideration and also know that if you want the snaps in the back to sit flush then order the smaller # in " for example if your Childs head measures 18.5" then order the INFANT. These hats adjust down to the smaller # of inches and will sit flush at the bigger # of inches. 
Suggested sizing: LOOK AT AGE MOSTLY.
Sun Hats:
newborn: 2M-12M
Toddler: 2yr-4yr
Trucker Hats:
If you know your child has a larger head than measure. After lots of reviews we have found our hats compared to other company’s like George Hats™ run one size bigger. If you are right on the cusp to switch then depending on the fit you want (perfect or tightened a little) size down or up. 
If your child is on the last inch of the measurements listed below, that is the size you will want.
PREEMIE (P): most 0-3M 13-15.5”
NEWBORN (N): Most 2M-9M 16-17.5”
INFANT (XS): Most 9M-2YR 17.5-18.5”
TODDLER (S): Most 2YR-4YR 18.5-20”
CHILD (M): Most 5YR+ 21-23” (a lot of adult women) 
ADULT (L): 23-25”