The length of the saddle is 278mm.  You can easily obtain this information for any saddle.  If you open the Saddle dialog box, you will see that the length (L) is one of the input values.  You can also show this dimension using the Dimensions dialog box.  Meanwhile, the width is not explicity stated.  The default saddle could be used to represent a variety of saddles of different widths.  If you are storing a selection of specific saddle models in BikeCAD Pro, I would recommend incorporating the width dimension into the name of the saddle when saving it to your database.