This product provides support for the "low" clans, which means those that tend to deal with peasants instead of nobility.

From the back:

"The Players Guide to Low Clans contains detailed information on the Assamites, Followers of Set, Gangrel, Malkavians, Nosferatu, Ravnos, and Tremere. It includes hints on running all Low Clan or mixed chronicles; how Low Clan characters develop over time; the mythology and history of the clans; and new Merits, Flaws, and Discipline techniques for the fallen. Also, you'll find details on Low Clan secret societies and on the Low Clan Cainites who have drawn notice in the Dark Medieval."