Perfect for very light flow days or for when you just want to feel fresh Our premium liners, made with organic cotton, are designed to enhance your wellbeing. Better for your body, our planet, and for womankind: No synthetics. No harmful chemicals. No perfumes. Ingredients:Made with 100% certified organic cotton. Each liner contains 73% organic cotton and 27% biodegradable biopolymer derived from cornstarch (the waterproof back sheet).