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A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed in a matrix, The xylene-soluble fraction of the heterophasic polypropylene resin is in the range of 20 to 50 wt%; The heterophasic polypropylene resin has a MFR 2 of from 0.01 to 50 g / 10 min; The ethylene content of the xylene-soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt% to 50 wt%; The heterophasic polypropylene resin has a notch Charpy impact strength of at least 25 kJ / m 2 , preferably at least 50 kJ / m 2 at -20 ° C; Wherein the MFR 2 (XS) / MFR 2 (matrix) is ≥ 5, preferably ≥ 10.