Defective products usually fall into one of three categories: Defectively Designed Products, Defectively Manufactured Products, and Defectively Marketed Products. Defectively Designed Products are products that possess a defect inherent to its design (i.e., a seat belt made out of paper would most likely be considered defectively designed because it does not have the strength or durability to restrain an automobile driver or passenger in the event of an accident). [It is important to note that Defectively Designed Products are intentional in that their design specifications actually called for the defect to be put into the product.] In contrast, Defectively Manufactured Products are not intentional in nature. These are products that turned out to be defective as the result of a failure somewhere during the manufacturing process (i.e., an airplane that has a competent design, but has wings that were not properly secured to the aircraft would most likely be considered defectively manufactured because, while its design was not flawed, the way it was put together was flawed, and ultimately defective). Finally, Defectively Marketed Products are products that were improperly sold, usually with a failure to properly warn consumers of potential dangers or a failure to properly instruct consumers on how to use the product in question (i.e., gasoline sold without a warning that the product is highly flammable).