The product is a brand new hardcover textbook called "Big Ideas Math: Advanced 1, California Teaching Edition" published by BIG Ideas Learning, LLC in 2015. This textbook is designed for advanced level mathematics students and is specifically tailored for California teaching standards. It includes features for teacher's edition, making it a valuable resource for educators looking to enhance their teaching materials. The book covers a range of mathematical concepts and is written in English, making it accessible to a wide range of students.