PURPOSE: To provide a resin compsn. having excellent coatability and impact resistance, consisting of a crystalline ethylene/propylene block copolymer, a specified ethylene/propylene copolymer rubber and high-density polyethylene.

CONSTITUTION: 35W88wt% crystalline ethylene/propylene block copolymer (A) having an ethylene content of 1W30wt%, 40W10wt% ethylene/propylene copolymer rubber (B) having a Mooney viscosity ML1+4 (100°C) of 30 or below, and 25W2wt% polyethylene (C) having a density of 0.945g/cm3 or above and a melt flow rate of 15g/10min or above, are blended together. As said component A, those having a melt flow rate of 0.5W40g/10min are preferred from the view point of appearance of moldings. As said component B, those having a propylene content of 25W50wt% are preferred. As said component C, those having a melt flow rate of 18g/10min or above are particularly preferred.