3M EAR340-4004 Christmas tree type earplugs with wire Comfortable polyester earplugs noise-proof earplugs

NRR: 25 dB SNR: 32dB
The
patented three-layer skirt design of the earplugs that can be washed and used repeatedly , comfortable to wear, well-
fitted, and the oval shape of the ear canal does
not need to be rubbed, easy to use
340-4004 Packing: 100 pairs/box, 4 boxes /Box=400
Use
Swimming earplugs, sleep improvement, concentration, hearing protection, protect you from noise interference at home, bedroom, self-study classroom, travel by car, ship, airplane, factory, construction site, and downtown Good helper. It is your good partner for a healthy new life, and it is also a must for you to watch F1 games.