I have always tried to avoid polyester etc but then see things like this and wonder if I'm wrong to be so against it? uk.maje.com/en/black-friday/categories/see-all/120riava/MFPRO01499.html
I also avoid things I don't know what they are like viscose, polyamide etc. I can't wear wool as it's so itchy so basically I'm left with cotton only. Am I being far too picky?