Thinx are washable, reusable period underwear. They keep you feeling fresh and dry with their built-in protection, are super comfy and machine washable. Their light absorbency Air Hiphugger is their best-selling style. Made from an ultra-thin micromesh that keeps you keep cool and dry, its waistband sits below the natural waist. They look and feel just like normal underwear. The light absorbency Air Hiphugger holds up to two tampon’s worth of menstrual blood.