Neither!
You see 4 and 6 way stretch vinyl in costume work a lot. Think any time you see some Marvel comics movie with a well proportioned blonde. The skin tight outfits that never wrinkle or crease? This is that stuff.
The stuff looks and holds up like leather, but stretches like a rubber band until it's glued down. It's sincerely impressive how much it stretches. JoAnn carries it in the costume section. Typically holds up reasonably well to UV exposure. In my case I'm not too concerned about longevity. A year or two out of it and I call it a win.
https://www.joann.com/search?q=Yaya+han
If you've never worked with it before, it's definitely worth checking out. Some of the automotive applications are really cool.
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