Go to Johnson Plastics and search for saddle collection, or if this link works, use it:
https://www.johnsonplastics.com/catalogsearch/result/?q=saddle+collection
They have four colors and you can engrave it to reveal a color below. I ordered one of each color, but haven’t cut it yet. It feels nice. It’s very floppy.
It is sold as laser safe by a company that sells to laser users. There are at least two threads on the forum where it is mentioned, but I couldn’t find them with a quick search. One person used it as part of a key chain.