Pa6 I believe. Food safe, microwave safe, etc.

But still plastic.

Great, I liked them. Getting a free loot box for every level up was just a nice little extra.

I never bought them, and I had saved a couple of hundred boxes to open one day. Sadly they got automatically opened just before the release of OW2.

When starfield released and tried this “early access for extra cash” nonsense, the game was cracked before the regular release was even available.