"Thank you for designing and making your excellent product at such a good price. I am a pediatric neurologist and help children with autism (not looking where they are going at times) and epilepsy (falls) and Chiari (bad if they get concussions).
This child had concussions so often due to a combination of not looking where he is going, constant motion, poor balance, and a big head - that he was having repeated vomiting with weight loss. Since he bought the Crasche hat, he has not had a concussion. He further is willing to keep it on and it does not make him look "special."
-Diane Stein MD, The Epilepsy Autism Project