Adjustability: many bases come with height adjustment features, making it easier to work on different parts of the garment whether you're sitting or standing. Mobility: bases often have wheels, which makes moving the dress form around your workspace convenient. Precision: a solid base ensures that the dress form doesn't shift, allowing for more accurate draping and fitting. In summary, a full base enhances the functionality and usability of a dress form, making it a valuable tool for fashion design and tailoring. This item is made of metal.