Abstract: An interposing cushion and method of application for stabilizing a cylindrical container placed in a rectangular cavity of a cushion structure. The interposing cushion includes a rectangular shaped base member adapted to fit a rectangular cavity in a cushion structure made for stacking inside a shipping box. The cushion structure is produced to protect rectangular shaped containers containing fragile objects. The base member has a top surface and a bottom surface and four sides. Four corner support members longitudinally extend upwards from the top surface. The support members form circumscribed inner surface segments for supporting the cylindrical container. The bottom surface has four shock absorbing spacer legs formed inboard of each corner.