Printing on synthetic paper is now becoming common, it was proposed to use Vinyl for this but Vinyl is a specific plastic (PVC) so not a good idea.
Either add Synthetic or clearly indicate that Vinyl must be used for all synthetic materials (less good)
Table A.29: MediaType Enumeration Values
|Vinyl <deprecated in>||Deprecation Note: Use the new Mediatype value of Synthetic and MediaTypeDetails="Vinyl"|
|Synthetic <new in>||Any print substrate that contains a large amount of synthetic material, such as vinyl.|
<nit: swap order of MediaType and MediaTypeDetails so that MediaType is first>