I purchased this for my daughter.  She is now 8 months old and the hat is STILL TOO BIG.  It covers her entire face when I put it on her.  It would have been great during the winter months (if it fit) but she gets mad when the hat falls over her eyes.  I still gave it 3 stars because it does seem pretty warm.  I wish I would have known this product runs big so I could have purchased the smaller 0-6 month one.