The AeroForm® expanders used in this trial were size small (12.5cm width/400cc) and, medium (14.0cm width/650cc). No large sizes were used in the study (15.5cm width/800cc). Details of the full dimensions are provided in Table 3A. Unlike saline expanders, the AeroForm® devices cannot be expanded beyond their labeled volume, due to the pre-formed inner bag that determines the devices final shape. Once this shape is achieved, the device will not get any larger.