The chin-strap is size-adjustable. Helmet is plastic. One size fits most kids.
Reviewed by: SCGirl
Title: Good dress up item for boy
Date:August 8, 2010
"My son is enjoying being like his daddy in this helmet. It will also work nice with his Halloween costume. It seems durable enough. It's a tad big for his 3 year old head, but that doesn't bother him."