The product is a textbook focusing on the design and construction of Stone Matrix Asphalt (SMA) mixtures, providing a state-of-the-practice overview. It likely covers topics such as the selection of materials, mix design methods, construction techniques, and quality improvement strategies for SMA mixtures. This resource would be valuable for students and professionals in the field of civil engineering and construction who are looking to enhance their knowledge and skills in the area of SMA mixtures.