15pairs 3M Earplugs Anti-Noise Industrial Noise Sleep Sleeping Anti-Noise Comfortable Super Soundproof Noise Reducer.

Nobrand Dupont Paper. 30pcs 15pairs 3M Earplugs Anti-Noise Industrial Noise Sleep Sleeping Anti-Noise Comfortable Super Soundproof Noise Reducer. 2pcs/pair. 15pairs in total. 1 free earplug storage box. This product is designed to help reduce the wearer's exposure to harmful noise and high intensity sound. SNR=37dB H=37dB M=34dB L=33dB. Please wear them in the correct way, if not, the effect will be seriously reduced. Please insert the earplugs completely into the ear canal. If most of the earplugs are exposed, please wear them again. 3M recommends that anti-noise earplugs be replaced every 1-3 days, the specific replacement time is recommended according to the actual situation. Product Reminder!. 3M Anti-Noise Earplugs reminds you that it is recommended to change the earplugs every 1-3 days, the exact frequency of replacement can be decided according to the actual situation. If the temperature in your receiving location is cold, which will cause the 3M earplugs to become hard, please