The book “Polymer composite materials . Definition of Mechanical Indicators: Methodical Guidelines for Implementation" edited by G. L. Rivina is an indispensable source of knowledge for students, graduate students and specialists in the field of materials science and engineering . With the rapid development of technology and science, understanding the properties of polymer materials is becoming key to creating innovative products and solutions. This book offers readers a deep dive into the world of polymer composite materials, revealing their mechanical characteristics and methods for determining them. The authors focus on the practical application of theoretical knowledge. The book contains detailed guidelines that will help readers not only to master the basic principles of working with polymer compositions, but also to learn how to conduct experiments, analyze the results and interpret the data obtained. This makes the book especially useful for those who want not only to study the theory, but also to apply their knowledge in practice. Who can like this book? First of all, it will be of interest to students of technical specialties studying materials and their properties . Graduate students working on dissertations in the field of polymer materials will find in it valuable recommendations and methodological approaches that will help in conducting research. Engineers and materials science specialists will also appreciate the practical focus of the book, which can become a desktop tool in their professional activities. The topics raised in the book cover a wide range of issues related to polymer compositions. The authors consider not only mechanical properties such as strength, rigidity and toughness, but also the influence of various factors on these characteristics. Readers will be able to learn about test methods such as stretching, compression, and bending, as well as how to correctly interpret the results. This knowledge is essential for the development of new materials and the improvement of existing ones, which in turn opens new horizons for innovation in various industries - from the automotive industry to medicine. The style of the authors is distinguished by clarity and accessibility of the presentation . They strive to convey complex scientific concepts in a simple and understandable language, which makes the book attractive even for those who are just starting their way in the study of polymer materials. The team of authors includes experts in their field, which ensures the high quality and relevance of the material presented . It also allows readers to see different points of view and approaches to the issues under study. The book “Polymer composite materials . The definition of mechanical indicators” deserves attention not only due to its practical value, but also due to the relevance of the topics it raises. With an ever-increasing interest in ecology and sustainability, polymeric materials are becoming increasingly important. Understanding their properties and capabilities is a step towards creating safer and more efficient technologies. If you are looking for a source of information that will help you to better understand the world of polymer composite materials and their mechanical properties, this book will be your reliable assistant. It will be useful for both students and experienced professionals seeking to expand their knowledge and skills in this dynamic area. Do not miss the opportunity to immerse yourself in the fascinating world of polymers and discover new horizons in science and technology!