This Bellows for EVO Z Series Filter Holder from Cokin is an adjustable lens shade used to remove and reduce light reflections reaching a lens, altering contrast in images. It extends up to 4.7" deep and collapses to 0.78" for easy storage. The EVO Bellows attaches directly to the EVO BZE01 Filter-Holder, making many creative combinations possible by adding 1 to 3 Z Series filters.