NOVELTY - A polymer composition contains crystalline norbornene polymer and amorphous alicyclic-structure-containing polymer . The crystalline norbornene polymer is produced by ring-opening polymerization of polymerizable monomer followed by hydrogenation. The polymerizable monomer contains (in weight%) 2-norbornene (90-100) and substituent-containing norbornene monomer (10-0). The amorphous alicyclic-structure-containing polymer is produced from polymerizable monomer containing 2-norbornene compound and dicyclopentadiene compound.    USE - Polymer composition is used for film and medical equipment (both claimed). Uses included but are not limited to food packaging bags for processed foods such as ham, sausage, pouch-packed food, frozen food, dried food, cooked rice, confectionery and meat, solar energy power generation system edge strip, fuel cell edge strip, alcohol-containing fuel-system component, medical stopper, bag for infusion solution, chemical liquid container for injection, ampule, prefilled syringe, bag for transfusion, solid chemical container, point drops container, blood-collecting tube, test-substance container, preservation container for sterile container such as catheter, scalpel, gauze and contact lens, sealed medical envelope, press through package and container for eye drops and vial.    ADVANTAGE - The polymer composition provides film having excellent transparency and reduced water-vapor permeability, and high quality medical equipment.    DETAILED DESCRIPTION - A polymer composition contains crystalline norbornene polymer and amorphous alicyclic-structure-containing polymer in the weight ratio of 90:10-50:50. The crystalline norbornene polymer is produced by ring-opening polymerization of polymerizable monomer followed by hydrogenation, and has melting point of 110-145 degrees C, weight average molecular weight of 50000-200000, and ratio of weight average molecular weight and number average molecular weight of 1.5-10 measured by gas permeation chromatography. The polymerizable monomer contains (in weight%) 2-norbornene (90-100) and substituent-containing norbornene monomer (10-0). The amorphous alicyclic-structure-containing polymer is obtained from polymerizable monomer containing 2-norbornene compound and dicyclopentadiene compound (50 or more to less than 90), and has a glass transition temperature of 50 degrees C or more and no melting point.