3M | 50 pairs】3M earplugs for Sleep Learning anti-noise Super noise-proof industrial protective machinery noise reduction 1100

Products includeEarplugs: 1110*50 pairsStorage box: 2pcsEarplugs(2pcs/bag,1100:200pairs/box)Detailed descriptionSmooth and dirt-resistant surface, more hygienicEarplugs are easy to rub and convenient to wearBullet-shaped design for a comfortable fit in the ear canalSoft hypoallergenic polyester foamNominal noise reduction value (NRR=29 dB SNR=37 dB)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 place the earplugs in a warm room to warm them back up, or use the temperature of your hand to make them soft again. After the product is back to soft, you can wear it normally.