Side:  4 1/2"

The eyelet holes on the side also provide extra ventilation while making it comfortable to wear for as long as you need to

The Fletcher bucket is the ultimate baby boy's beach hat complete with a cute fish print

Both the natural and black colors also include an adjustable chin-strap

scrunch it  and it will bounce back to a great fit

Dorfman Pacific - First Mate Baseball Cap Henschel Fedora Side: 4 1/2"The Dorfman Pacific first mate baseball cap is a well constructed, unstructured washed twill style. It features a soft cotton front with the letters "First Mate" embroidered and has mesh on the sides and back for ventilation. It is one size fits all and has a metal slide adjustment on the back. Brim: 3"