I have heard that if there are holes in the jeans, you have to pay more money for that! This you should not do.
Cotton is the best fabric. If it is mixed with a little bit of polyester, it is also okay, But only polyester should be avoided.
I would prefer that people avoid leather. Do you know just for leather, so many animals are slaughtered. All this should be done away with.
It is said, ‘Ahimsa paramo-dharma’, (Non-violence in all action is the supreme duty or Dharma). Everyone should walk the path of non-violence and be a vegetarian. This is very necessary. Only then will you be able to meditate well.