The HEAROS Airplugs are designed with comfort and protection in mind. The reusable earplugs boast a NRR rating of 20 to help block out any unwanted noise while on the plan. The earplugs are designed with a RegulatAir filter technology with helps reduce airplane pressure in your ears. This technology also helps reduce any ear pain associated with the pressure while flying. They are designed with a latex free silicone to prevent any unwanted allergic reactions or skin irritations. These airplane earplugs are extremely soft and pliable to ensure maximum comfort for your entire flight. A free traveling case is included for your convenience.