Natracare Ultra pads are made from only certified organic 100% cotton and renewable and sustainable plant cellulose. They are totally plastic-free, and like all of Natracare products, are totally chlorine-free because they never use chlorine bleach in any of their production processes.Being plastic-free means Natracare does not contain any polyethylene, polypropylene or polyacrylate super absorbents, all of which can irritate the skin. cotton coverWomen can be reassured that Natracare Ultra pads do not contain synthetic materials, chemical additives such as binders or surfactants, fragrances or dyes and because of the organic and natural materials used, are over 95% biodegradable and compostable. The absorbent core of the pad is made from Forest Stewardship Council certified pulp (FSC) and the cover that is next to your skin is certified organic 100% cotton. The pads are individually wrapped in biodegradable purse packs.The slim style of the Ultra pad is very discreet with the added security of wings. The absorbent core absorbs the menstrual fluid and locks it away so that the soft organic cotton cover allows your skin to breath whilst at the same time keeping you dry.- Soft, certified-organic cotton cover- Absorbent cellulose core to keep you dry- Waterproof plant-based back- No plastic, perfumes, or dyes- Totally chlorine-free- Biodegradable and compostable