With the help of product attributes you can specify additional information on product details section. You can create attributes from the attributes section on your left sidebar or right from adding product popup. Once you create an attribute it will later appear in attributes list on the product page, so you just can pick it and add a value to it.
Use created attributes to add product unlimited parameters such as size, color, dimensions. Besides accepting unlimited attributes, the plugin also accepts multiple values for each attribute.

Already created attributes can be edited or removed form Attributes page. They will be listed in this subsection. The list includes particular Attributes related information such as:
Attribute Name, Slug, Order by, Terms