Heavy duty cotton drill hat with raw edge around rim.
Fits loosely on a 1 yr old, up to about 6 yrs or so.
Circumference - roughly 51cm
Ivy is 5 1/2, Freddie is 4, Minnie is 1 and they're all wearing the same size
We've been using and abusing our hat for the past year, at the beach, in the park, it's been covered in mud and sand and comes out looking great after a wash.