Abstract: There is provided an apparatus for continuous in-line labeling of flexible walled bottles of predetermined height, having a pair of substantially continuous lower and upper conveyor members substantially longitudinally aligned to provide an inlet end and an outlet end. The upper conveyor member includes a substantially endless chain supporting a plurality of downwardly depending compression wedges spaced therealong, whereby successive bottles to be labeled are received at the inlet end in partially compressed relationship between the top surface of the lower conveyor and the compression wedge. The apparatus can be selectively adjusted such that the vertical spacing between the top surface of the lower conveyor and the wedges of the upper conveyor appropriately compressively accommodate bottles of various heights.