I bought a pair of these in size small. I ignored the sizing chart because Prana would have me wearing size Medium but I have some pants of theirs that are perfect in small so I know better.
They fit OK except the waist is too loose. I'm not one of those people who like high waisted pants at all - I like low rise because usually the waist is too tight. But these were too loose, and I'm afraid if I had a backpack on they would feel like they would fall off.