I bought this purely for the sun protection for my 3 year old.  It looks great, keeps the son off his face and neck, and he wears it!  I went back and ordered a smaller one for my 11 month old daughter and an adult version for myself.

Update:
I just received the hat I ordered for my daughter.  Not quite the same hat.  I loved the adjuster strap on the back of my son's and used it to fit the hat to his head.  For my daughter's "6-18 months" hat, no adjuster strap and the hat is far too big.  I'll have to stitch in something to make it tighter on her head (which is going to look really strange) but as it is, it won't fit her anytime this year.  Hopefully it will last until next year and fit her then.  The hat does have the chin strap at least.  Really disappointed about the fit though.  Should have ordered something else.