Mine is polypropylene.

"Tegger®" wrote:
>
> Randolph <trash@junkmail.com> spake unto the masses in
> news:40030374.2F2660F3@junkmail.com:
>
> > Bumper covers are typically made from polypropylene
>
> They're polyurethane. Body shops repair cracks in PU all the time.
>
> --
> TeGGeR®