The invention relates to a heat-shrinkable film comprising a first polymer ply A comprising at least one dark pigment, a second polymer ply B comprising at least one white pigment, wherein the thickness ratio of the first ply A is in the range of 5:95 to 50:50, the film has a thickness of 20 μm bis 100 μm, the light transmission of the film is not more than 12%, and the film after 15 seconds in a water bath having a temperature of 95° C. exhibits shrinkage in a main shrinking direction in the range of 20% to 85%. The invention further relates to a hose comprising such a heat-shrinkable film and to a process for producing such a heat-shrinkable film.