I have a wicked small head, like my snowboard helmet is an XS, could most definitely fit a kids. I was a little skeptical of this simple band but it fits great, feels comfortable even after hours of wear, and looks really cute. I got a sparkly silver which will go well with most things i own. Usually I wear headbands to wash my face or cook, since I have a collection of cute headbands that are painful to wear after a short time despite my small head. I've been wanting to try the pony tail holders since i saw them in my local salon, maybe in my next Birchbox! Thanks for the great sample!