Levi Strauss opened a small dry goods store, first in New York, then in San Francisco, California. Among the products he sold were jeans. These pants were especially useful for miners in California. They needed clothing made from a strong material. Jeans are usually made from a heavy cotton cloth called denim.
Levi Strauss partnered with a clothing maker named Jacob Davis. Davis had invented a process for making rivets for jeans. These little metal connectors helped hold the pieces of cloth together to make the jeans stronger.