0% chlorine, 0% dye in contact with baby's skin, 0% petrolatum, 0% paraffin. They are composed of nearly 50% natural and biodegradable materials. Natural cellulose from responsibly managed forests and certified FSC and TCF - (not bleached with chlorine). An ultra-absorbent thin layer, which quickly absorbs moisture and retains it to ensure the driest diaper possible for up to 12 hours. BB ECOLOGIC diapers are ultra-thin and highly absorbent with a top layer that draws moisture and leaves baby's delicate skin dry. Ecolabel, FSC, Oeko-Tex certified.