 Kodachrome was the first commercially successful application of monopack multilayer film, introduced in 1935.For professional motion picture photography, Kodachrome Commercial, on a 35mm BH-perforated base, was available exclusively from Technicolor, as its so-called "Technicolor Monopack" product.Similarly, for sub-professional motion picture photography, Kodachrome Commercial, on a 16mm base, was available exclusively from Eastman Kodak.