CAREFREE BARELEY THERE liners are breathable, super thin, and soft like cotton underwear. They are highly flexible and follow your movements so you'll hardly notice you're wearing them. Wear CAREFREE BARELY THERE liners on all the days in-between your period to protect your undies from light discharge and maintain that fresh underwear feeling throughout the day. Change your liner not your undies during the day! Know Yourself. Know CAREFREE .