The purpose of this textbook is to simulate the product development experience of a buyer or product developer while exposing students to the principles, concepts, knowledge, and skills needed for success in a real world setting. Based on over 25 years of teaching fashion merchandising and 30 years of working in the fashion industry, the authors' bring a wealth of practical experience to students applying difficult concepts and theories. This work bridges this gap, and increases students' understanding of the product development process in a comprehensive and accessible way.