Healthier by Nature Organic Cotton Cover Plastic Free Perfume Free and Chlorine Free USDA Certified Biobased Product Vegetarian Society Approved - Vegan Ethical Award Why Natural Liners? Many gynaecologists have advised women with sensitive skin to use natracare panty liners to reduce their contact with chlorine bleaches synthetics and superabsorbents made from petrochemicals. Our organic cotton is certified according to the Global Textile Standard (GOTS). Cotton is a natural material and some visual variations may occur.