<p>A thermally stable microporous breathable film is provided comprising at least 35 % filler, by weight of the filled-film, and a thermoplastic polymer blend of a first polyethylene polymer and a second polyethylene polymer. The first polyethylene polymer comprises 30 % - 70 % by weight of the polymer blend and can have a density between about 0.86 g/cm<3> and 0.89 g/cm<3> and the second polyethylene polyner can have a density between about 0.90 g/cm<3> and 0.92 g/cm<3>. The filled-film can be uniaxially or biaxially oriented to form a microporous film and/or film laminate having good body conformance and which retains a high WVTR at 37 DEG C and above.</p>
