Recommendations on non microplastic undies that’s also seamless?

Hi guys.
I have been paranoid about wearing microplastic polyester undies for sometime now.

Cotton bhi theek h but i was wondering if anyone has suggestions on non micro plastic undies that is also seamless?
Nylon is also microplastic so is elastane (literally best seamless undies) but i am declutterring my clothes and removing all micro plastics. Help! Thank you.