Thermoplastic resin composition

A thermoplastic resin composition comprising:

• a diene-based graft polymer;
• a first polymer comprising a vinyl cyanide-based monomer unit and an alkyl-substituted styrene-based monomer unit;
• a second polymer comprising a vinyl cyanide-based monomer unit, an aromatic vinyl-based monomer unit, and a (meth)acrylate-based monomer unit, wherein the (meth)acrylate-based monomer unit is represented by Chemical Formula 1 below
• wherein in the Chemical Formula 1, R represents a hydrogen or a C1 to C10 alkyl group and L represents a C1 to C10 alkylene group;
• a third polymer comprising a vinyl cyanide-based monomer unit and an alkyl-unsubstituted styrene-based monomer unit, wherein the third polymer comprises a weight-average molecular weight of 80,000 to 220,000 g/mol;
• a fourth polymer comprising a vinyl cyanide-based monomer unit and an alkyl-unsubstituted styrene-based monomer unit, wherein the fourth polymer comprises a weight-average molecular weight of 1,500,000 to 5,000,000 g/mol;
• and
• a fifth polymer comprising an olefin-based monomer unit, wherein the fifth polymer comprises a density of 970 to 1,000 kg/m3 measured in accordance with ASTM D1505,
• wherein the fifth polymer is comprised in an amount of 0.10 to 3.00 parts by weight with respect to 100 parts by weight of the sum of the diene-based graft polymer, the first polymer, the second polymer, the third polymer, and the fourth polymer.