How do I distinguish women cloth from men cloth?

In a fatwa about women wearing pants,I read that it is permissible for women to wear pants if it is loose & not similar to pants that men wear. But I'm having a hard time understanding what kind of pants are for women. I mean men wear all kinds of pants these days. Can I buy a pair of pants from a shop if it says "Women trousers" on the lebel? Will that lebel be enough for me to explain myself to allah? Usually where I come from, people especially my moms age tend to consider pants as men clothing.however modern muslim women are seen wearing pants in recent times.