Replying to Oakley pant sizing?

I'm looking to get the Oakley Karn pants but don't know what size to get because I've never owned Oakley pants. How much difference is there between L and XL loose fit? I'm 6 foot and 150 lbs. I want em nice and baggy but I don't want to be absolutely swimming in them. I couldn't find much using the search bar, Oakley's size chart isn't very useful, and I live about an hour from the nearest shop that I could try them on in. Any advice or input is appreciated!