However proving a design defect can be difficult. Some of the factors used by the jury to asses s whether a product design is defective and unreasonably dangerous are:1.The utility of the product.
2. The feasibility and approximate cost of safety improvements.
3. The public common knowledge of the product inherent danger.
4. The frequency and severity of injuries that result from the product.
5. The adequacy of instructions and warnings.
6. The environment where the product was used.
7. The consumer reasonable care in using the product.
8. The age and the condition of the product.