Headband cracked in the middle

Fixing plastic is tough, I recommend trying that new stuff you can get at Walmart, it's a plastic filler, it's been onTV this stuff only hardens with the UV light that is included in the package. This stuff is unlike crazy glue and has some tensile strength to it, it stays liquid till you apply the light, and it is thinks so it won't run. I think if there is a chance try that and let us all know how it worked.