Abstract: Absorbent sanitary products, such as diapers, pads, or sanitary napkins, comprising a copolyether ester film having a water permeability of at most 0.02 g/cm.sup.2 /h at 23.degree. C. and 0.07 bar and a water vapor permeability of at least 500 g/m.sup.2 /day at 23.degree. C. and 100-50% relative humidity, a liquid-permeable layer, and a liquid-absorbing bibulous layer. The copolyether ester of the film contains 5-55 weight % of long-chain glycols having a molecular weight of 800-6000 with an atomic ratio of carbon to oxygen of 2.0 to 3.7 %. The film is made from copolyether ester chips which in water at 23.degree. C. have a water absorption of at most 15 weight %.