The invention provides a biaxially oriented film comprising a polymer composition having a density 954 to 970 kg/m³ measured according to ISO 1183, and an MFR2 of 0.5 to 2.0 g/10 min, measured according to ISO 1133, wherein said composition comprises: (i) 90 to 99 wt%, relative to the total weight of the polymer composition, of a multimodal high density polyethylene (HDPE), wherein the multimodal HDPE has a density in the range of 945 to 970 kg/m³ measured according to ISO 1183, an MFR2 of 0.1 to 3.0 g/10 min according to ISO 1133 and a molecular weight distribution (MWD) of 5 to 25, and wherein the multimodal HDPE comprises at least two fractions: (A) 30 to 70 wt%, relative to the total weight of the multimodal HDPE, of a lower molecular weight fraction being a polyethylene with a density in the range of 955 to 980 kg/m³ measured according to ISO 1183 and an MFR2 of 100 to 1000 g/10 min measured according to ISO 1133; and (B) 30 to 70 wt%, relative to the total weight of the multimodal HDPE, of a higher molecular weight fraction being a polyethylene with a density in the range of 940 to 960 kg/m³ measured according to ISO 1183 and an MFR2 of 0.0001 to 1.0 g/10 min measured according to ISO 1133; and (ii) 1 to 10 wt%, relative to the total weight of the polymer composition, of a hydrocarbon resin.