The product is a paperback book titled "Kalka River 1223: Genghiz Khan's Mongols invade Russia" by authors David Nicolle and Viacheslav Shpakovsky. Published by Bloomsbury Publishing in 2001, it is part of the Campaign Series and is written in English. The book delves into the history of Genghiz Khan's Mongols invading Russia, making it a valuable resource for those interested in foreign language study, history, and military actions in the region. With 96 pages, this trade paperback is intended for a general audience and offers insights into the events of 1223 in Central Asia and Russia.