Carefree Barely There Breathable Ultra Thin Liners. Wear Carefree Barely There Breathable Ultra Thin Liners on all the days between your period to maintain that fresh underwear feel and to protect your favourite undies from light discharge. Change your liner not your undies during the day. - Breathable - Helps to keep you feeling fresh. - Feels soft & thin - As your favourite cotton underwear. - Highly flexible - Conforms to your body movements and can fold like wings to fit your g-string.