Our board shorts built in a briefs but the lining doesn't cut or show a panty line.
A V slit on the side of each leg and this allows room for those of us who have larger thighs, the waist has a drawstring to tighten the shorts up if needed. Covered some trouble spots, and allowed me to be active.
HOLYSNOW Board shorts are constructed from 82% nylon and 18% spandex and provides light weight, quick dry and comfort.