Abstract: Oriented film is provided formed from a blend of a homogeneous copolymer resin derived from units of acrylonitrile (70 to 93% molar) and at least one aromatic olefine (30 to 7% molar) with a graft copolymer having a diene rubber substrate and a superstrate which is a homogeneous copolymer derived from units of acrylonitrile (70 to 93% molar) and at least one aromatic olefine (30 to 7% molar) the blend containing 5 to 15% by weight of rubber and the refractive indices of the substrate and superstrate being within 0.005 of that of the homogeneous copolymer resin, the film having a Gardner haze of less than 10% having been drawn in at least one direction to a ratio of at least 1.7:1 at a temperature of between 105.degree. and 155.degree. C.