General

A question about nutrition

I looked at a bag of Kettle cooked lays and saw that the total fat was 9 grams and the saturated fat was 1.5 grams and trans fat of 0 grams. Where does the 7.5 grams of fat come from? Also why aren't the other fat sources listed?
http://www.fritolay.com/our-snacks/lays-kettle-cooked-original.html