This Modern Travel Underwear (bra and briefs) by Exofficio is the essence of sleek, smooth and comfort. Designed for superior technical performance during all your travel adventures. Super soft, nylon stretch fabric regulates perspiration in response to body temperature to keep you cool and dry. Sheer mesh stripe side panels provide breathability and a flattering line. Bonded waist and leg openings create a smooth, line-free look under form-fitting clothes. With a cotton panty liner for breathability, long-lasting odor resistance, and a comfortable fit, you'll want to wear these pretty much all the time, not just on the road.