Measures about 6 3/4 in tall and 18 in around unstretched.
For size reference my "model" is an average size 3 yr old. :)
If you like this hat but need another color or size I would be happy to make you a custom listing.
To see other toddler hats you may visit this section of my shophttp://www.etsy.com/shop/MyStitchInTime?section_id=11417493