A design defect is a type of defect that exists in the product from the outset because of an inherent flaw in the product's design. This flaw makes the product inherently dangerous or unsafe, even if it is manufactured and used as intended. In other words, a design defect is a problem with the way the product was designed, rather than how it was made or used.

A design defect can exist in a wide range of products, including consumer products, medical devices, and vehicles. Examples of design defects may include a poorly designed seat belt system that fails to restrain the occupant in a car accident, a baby crib with slats that are too far apart, creating a risk of entrapment, or a household appliance with a faulty electrical design that creates a risk of fire or electrocution.

A product with a design defect can be dangerous or unsafe, even if it is used as intended and in a responsible manner. The defect may not be apparent to the consumer and may only become apparent after an injury or harm has occurred. For instance, a car with a design defect that makes it unstable at high speeds may appear to be functioning correctly until a high-speed accident occurs.

In product liability cases involving design defects, the plaintiff must prove that the product's design was unreasonably dangerous and that a safer design was feasible at the time the product was designed. Additionally, the plaintiff must demonstrate that the design defect caused their injury or harm.

If a product's design defect caused injury or harm to a consumer, the manufacturer or designer may be held liable for the damages. Design defect cases can be complex, and it is important to consult with an experienced attorney who can help determine the legal options available to an injured party.