What is concept of product mix?

A firm's product mix is the complete set of all products offered. The product line is an assorted group of items that the consumer would think is similar. For example, Pampers and Proctor and Gamble sell a lot of hygiene products. Their product mix would consist of the full range of individual items: diapers, wipes, Gillete’s razors, Head & Shoulders Shampoo, Vics Cough and Cold relief.