packing:polybag,plastic box,plastic NRR:29DB Product information1.soft and comfortable,reasonable price,slow rebound.Smooth surface provides lasting comfortable2.Color:various colors3.Packing:polybag,plastic box,plastic4.PU earplugFunctions1.De-noised,Anti-sandstorm and Bug-repellentApplication• Perfect for high noise level circumstance,racing,shooting,travelling,bathing,sleeping and studying.