The product is a lot of 5 Borland Turbo Vision C++ Pascal program user's guides, version 3.0. These vintage manuals are a valuable resource for those interested in vintage computing and retro programming. The brand, Borland, is known for its contributions to the development of software programming tools, making these guides a sought-after collectible for computer enthusiasts and history buffs alike. Each guide provides insight into the programming language and software used during that time period, making them a unique and informative addition to any collection.