A polymer composition comprising a first heterophasic propylene copolymer (a), a second heterophasic propylene copolymer (b) and optionally an inorganic filler, wherein the amount of the first heterophasic propylene copolymer (a) is in the range from 4.6 to 70.4 wt% based on the total amount of the polymer composition, wherein the amount of the second heterophasic propylene copolymer (b) is in the range from 4.3 to 69.8 wt% based on the total amount of the polymer composition, wherein the first heterophasic propylene copolymer (a) comprises: - from 80 to 92 wt% of a propylene polymer; - from 8 to 20 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms; wherein the melt flow index of the first heterophasic propylene copolymer (a) is in the range from 40 to 120 dg/min as determined according to ISO1133-1:2011 at 230 °C with a 2.16 kg load, wherein the amount of the xylene-soluble portion of the first heterophasic propylene copolymer (a) is in the range from 10 to 27 wt% based on the total amount of the first heterophasic propylene copolymer (a) as determined according to ISO16152:2005, wherein the ratio between the intrinsic viscosity of the xylene-soluble part IV CXS and the intrinsic viscosity of the xylene-insoluble part IV CXI of the first heterophasic propylene copolymer (a) is in the range between from 3.1 to 7.2 wherein IV CXS and IV CXS are measured according to ISO1628-1:2009 and ISO1628-3:2010 respectively. wherein the second heterophasic propylene copolymer (b) comprises: - from 65 to 81 wt% of a propylene polymer, - from 19 to 35 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms, wherein the MFI of the second heterophasic propylene copolymer (b) is in the range from 10 to 100 dg/min as determined according to ISO1133-1:2011 at 230°C with 2.16 kg load, wherein the MFI of the polymer composition is in the range from 5 to 100 dg/min as determined according to ISO1133-1:2011 at 230°C with 2.16 kg load. wherein the first heterophasic propylene copolymer (a) comprises: - from 80 to 92 wt% of a propylene polymer; - from 8 to 20 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms; - from 80 to 92 wt% of a propylene polymer; - from 8 to 20 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms; wherein the melt flow index of the first heterophasic propylene copolymer (a) is in the range from 40 to 120 dg/min as determined according to ISO1133-1:2011 at 230 °C with a 2.16 kg load, wherein the amount of the xylene-soluble portion of the first heterophasic propylene copolymer (a) is in the range from 10 to 27 wt% based on the total amount of the first heterophasic propylene copolymer (a) as determined according to ISO16152:2005, wherein the ratio between the intrinsic viscosity of the xylene-soluble part IV CXS and the intrinsic viscosity of the xylene-insoluble part IV CXI of the first heterophasic propylene copolymer (a) is in the range between from 3.1 to 7.2 wherein IV CXS and IV CXS are measured according to ISO1628-1:2009 and ISO1628-3:2010 respectively. wherein the second heterophasic propylene copolymer (b) comprises: - from 65 to 81 wt% of a propylene polymer, - from 19 to 35 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms, - from 65 to 81 wt% of a propylene polymer, - from 19 to 35 wt% of an ethylene-α-olefin copolymer, wherein the moiety of α-olefin in the ethylene-α-olefin copolymer is derived from at least one α-olefin having 3 to 20 carbon atoms, wherein the MFI of the second heterophasic propylene copolymer (b) is in the range from 10 to 100 dg/min as determined according to ISO1133-1:2011 at 230°C with 2.16 kg load, wherein the MFI of the polymer composition is in the range from 5 to 100 dg/min as determined according to ISO1133-1:2011 at 230°C with 2.16 kg load.