The product is a trade paperback book titled "Trolls & Trollkin" by Ray Turnet, published by Chaosium Inc. in 1978. Set in the world of Runequest, this fiction narrative is written in English and is the original edition. The book's focus is on the topics of trolls and trollkin, providing in-depth information and rules for players to use in their Runequest RPG games. This publication is a valuable addition to any fan's collection of books on the fantasy world of Runequest.