Thank you for helping us by reporting bad content.
Another one of those ah-ha moments! If you make a helmet expandable, then it can fit any size head! I think it would make sense that a well fitting helmet would be safer, but I also wonder about this helmet being expandable if it could maybe lose stability? This helmet is made by Carrera and can supposedly stretch out to fit heads of any size without compromising on safety. I think this is a really cool idea if it really is safe as they claim.
Image SourcE: http://www.ohgizmo.com/2012/09/11/accordion-like-helmet-could-fit-odd-sized-heads/