The product is a trade paperback book titled "Anaximander, Heraclitus, Parmenides, Plotinus, Laotzu, Nagarjuna" by author Karl Jaspers, published by HarperCollins in 1974. The book covers the biographies and ideas of influential philosophers from ancient and classical times, including figures such as Anaximander, Heraclitus, Parmenides, Plotinus, Lao-Tzu, and Nagarjuna. With a total of 138 pages, this book offers a comprehensive exploration of the histories and philosophical insights of these notable thinkers in English language.