PROBLEM TO BE SOLVED: To obtain a plastic molding excellent in the balance of every kind of performance such as high oxygen permeability, low elastic modulus and high moisture content, and to provide a plastic molding for a contact lens or the like. SOLUTION: As for this plastic molding, an oxygen permeation coefficiency is >=60×10-11 (cm2/sec) [mlO2/(ml.hPa)] and the elastic modulus is 275 to 830 kPa.