The versatile choice of filling.
Wadding is made from polyester and is washable. It is supplied on rolls of varying thickness from 2-8ozs.
The thickness used really depends on what you are making. In my quillows I use 2oz as I find this is manageable on the machine, it gives the warmth needed and this folds easily into the cushion. If I used a thicker version then the cushion would need to be larger to be able to take the extra thickness.
This is supplied in fabric form and a cushion pad can be made from this and then filled with loose polyester. Although this would make the pad quite delicate as it will be prone to damage if removed too many times. It is probably advisable to then put this into a stronger material inner cover.
It is also used to place between two pieces of material to provide thickness for warmth and comfort as in a quilt.
Cushion covers with a quilted effect give a totally different look and feel, with the notion that some parts of the cover is actually leaping in front of the others, almost a 3D effect.
Little pieces can be use to give a relief effect and make small sections of your sewing stand out.
Bolsters can be filled with this type of cushion pad as it can be rolled up and then placed in a stronger inner cover.
Apart from using this as a cushion filling it is good to be used to simulate snow landscape if doing a window dressing at Christmas or under the tree.