There are three kinds of product defects:
- Defects that come in the manufacture of the product. This generally means that the product was not made according to normal specifications and, as a result, it becomes dangerous.
- Defects that come as a result of faulty design. This generally means that the defect came not as a result of faulty production, but from an error in specifications. Consequently, the product is inherently dangerous despite the fact that it may have been produced in exact accordance with the design. The design of a product may also be defective if it fails to include proper safety devices.
- Defects that come out of the failure to give adequate instructions concerning the use or assembly of the product, as well as failure to provide sufficient warnings concerning possible dangers from the product. The product must include specific warnings explaining how and why the product may be dangerous, and these warnings must be displayed in a conspicuous place.