Vapor-permeable, substantially water-impermeable multilayer article

An article comprising:

• a nonwoven substrate;
• and
• a film supported by the nonwoven substrate, the film comprising a mixture of:
• a first polymer that comprises a polyolefin grafted with an anhydride, an acid, or an acrylate selected to improve adhesion to the nonwoven substrate;
• a second polymer that is different from the first polymer, the second polymer being capable of absorbing and desorbing moisture and providing a barrier to aqueous fluids, the second polymer is selected from the group consisting of maleic anhydride block copolymers, glycidyl methacrylate block copolymers, polyether block copolymers, polyurethanes, polyethylene-containing ionomers, and mixtures thereof;
• wherein the second polymer comprises from 30% by weight to 35% by weight of the film;
• and
• from at least about 1% by weight to at most about 10% by weight of a polar compound, the polar compound comprises a polytheramine;
• wherein the film is a monolithic film.