Is it permissible for a man to wear women jeans (that is only simple one without any designs and other things)? As, sometimes, the material is very comfortable and they costs less.
No it's not allowed. There are 6 criterias for dressing up in Islam, and one of them is: a man shouldn't wear the dress of a woman and a woman shouldn't wear the dress of a man. Hence it's not allowed. Hope this helps.