Lysian noise canceling foam ear plugs are made of Super Soft and Non-toxic PU, soft enough, that is easily compressed and inserted into the ear. The features of slow rebound and low-pressure provide you with comfort. No need to worry about pressure on your ears and feeling uncomfortable. These ear plugs suit most adults and people with large ear canals. Use ear plugs to protect your ears from loud sounds and keep your hearing acute. Lysian ear plugs have passed strict tests and get professional certificates--a high noise reduction rating of 38dB (SNR) and 31dB (NRR), which can effectively help you stay away from noise. Great for sleeping, studying, working, shooting, traveling or any environment you need quiet. One pack includes 60 pairs in a large capacity canned packaging which can last for a long time of usage, and 1 pair of silicone earplugs with a plastic carrying case. Health concern for adults.