Heterophasic propylene copolymer (HECO) comprising (a) a matrix being a polypropylene, said polypropylene has a polydispersity index of at least 5.0, and (b) an elastomeric propylene copolymer dispersed in said matrix, wherein (i) said heterophasic propylene copolymer (HECO) has a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of equal or below 1.0 g/10min, and (ii) the amorphous phase of the xylene cold soluble fraction of the heterophasic propylene copolymer (HECO) has an intrinsic viscosity measured according to ISO 1628-1 (at 135 °C in decaline) of at least 3.5 dl/g, preferably in the range of 3.8 to 6.0 dl/g, and wherein the polypropylene comprises 15.0 to 35.0 wt.-% of a first polypropylene being a first propylene homopolymer (H-PP1) or a first random propylene copolymer (R-PP1), 29.0 to 48.0 wt.-% of a second polypropylene being a second propylene homopolymer (H-PP2) or a second random propylene copolymer (R-PP2), and 18.0 to 55.0 wt.-% of a third polypropylene being a third propylene homopolymer (H-PP3) or a third random propylene copolymer (R-PP3), based on the total amount of the first polypropylene, the second polypropylene, and the third polypropylene, with the proviso that at least one of the three polypropylenes PP1, PP2, and PP3 is a propylene homopolymer, and wherein further (d) the first polypropylene has the lowest the melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of the three polypropylenes PP1, PP2 and PP3 and (e) the three polypropylenes PP1, PP2 and PP3 differ in the melt flow rate MFR 2 (230 °C) measured according to ISO 1133. (a) a matrix being a polypropylene, said polypropylene has a polydispersity index of at least 5.0, and (b) an elastomeric propylene copolymer dispersed in said matrix, wherein (i) said heterophasic propylene copolymer (HECO) has a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of equal or below 1.0 g/10min, and (ii) the amorphous phase of the xylene cold soluble fraction of the heterophasic propylene copolymer (HECO) has an intrinsic viscosity measured according to ISO 1628-1 (at 135 °C in decaline) of at least 3.5 dl/g, preferably in the range of 3.8 to 6.0 dl/g, and wherein the polypropylene comprises (i) said heterophasic propylene copolymer (HECO) has a melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of equal or below 1.0 g/10min, and (ii) the amorphous phase of the xylene cold soluble fraction of the heterophasic propylene copolymer (HECO) has an intrinsic viscosity measured according to ISO 1628-1 (at 135 °C in decaline) of at least 3.5 dl/g, preferably in the range of 3.8 to 6.0 dl/g, and wherein the polypropylene comprises 15.0 to 35.0 wt.-% of a first polypropylene being a first propylene homopolymer (H-PP1) or a first random propylene copolymer (R-PP1), 29.0 to 48.0 wt.-% of a second polypropylene being a second propylene homopolymer (H-PP2) or a second random propylene copolymer (R-PP2), and 18.0 to 55.0 wt.-% of a third polypropylene being a third propylene homopolymer (H-PP3) or a third random propylene copolymer (R-PP3), based on the total amount of the first polypropylene, the second polypropylene, and the third polypropylene, with the proviso that at least one of the three polypropylenes PP1, PP2, and PP3 is a propylene homopolymer, and wherein further (d) the first polypropylene has the lowest the melt flow rate MFR 2 (230 °C) measured according to ISO 1133 of the three polypropylenes PP1, PP2 and PP3 and (e) the three polypropylenes PP1, PP2 and PP3 differ in the melt flow rate MFR 2 (230 °C) measured according to ISO 1133.