A: The 3M earplug claim is about the company’s earplugs, which were used by people in the military. The victims claim that these earplugs resulted in tinnitus and hearing loss. They also believe that the products were designed in a way that encouraged these side effects and that 3M knew about this but did not disclose this to consumers. This claim involves both design defects and marketing defects because the product was flawed, and the company did not disclose it.