This document discusses consumer products and product lines. It defines a consumer product as a tangible good for non-business use by individuals or households. It then explains that a product line is a group of related products made by a single company, and describes two ways to expand a product line: line filling by adding new items, and line stretching by introducing similar products with new features. Finally, it notes that a company's product mix includes all product lines and items offered for sale, with dimensions of width, length, depth, and consistency.