the difference between sarong and jarik is that the latter can't be worn that loosely, one of its end shown at the front is pleated (like when you make an origami fan), and must be kept in place by a waistband, named 'stagen', which is worn like the one you see on people in tuxedo, for the same purpose like the Japanese obi, but not that showy (click the red words if you want some pictures and explanation of the thing). Men and women alike wear stagen.