The product is a textbook titled "Mechanics of Materials", authored by various contributors and published by John Wiley & Sons in 1985. It is the 4th edition of the textbook and is in hardcover format. The subject of the textbook is Mechanical Engineering, making it suitable for students or professionals in that field seeking to deepen their understanding of material mechanics. This comprehensive resource offers in-depth information and theoretical knowledge on the mechanics of materials, making it a valuable reference for individuals studying or working in the mechanical engineering field.