Perfect for day and night and for light to heavy flow daysOur premium pads with wings, made with organic cotton, are designed to enhance your wellbeing. No synthetics. No harmful chemicals. No perfumes The mixed 12 Pack contains 6 day and 6 night pads with wings and the mixed 20 Pack contains 10 day and 10 night pads with wings. Ingredients:Made with 100% certified organic cotton. Each heavy pad (perfect for night due to its extra long length) contains 83% certified organic cotton (the absorbent cotton pad) & 17% biodegradable biopolymer derived from cornstarch (the waterproof back sheet).