3M1270 Christmas tree with earplugs

3M 1270 Christmas tree with earplugs / protective ear plugs / ear Earplugs: This product is PVC foam slow rebound characteristics have made slow rebound earplugs hand will slow within a few minutes after knead into thin strips slow expansion gradually restored to its original shape. After the twisted thin strips inserted into the external auditory canal of the ear for a few seconds, you can close contact with the ear external ear canal, both anti-noise without ear swelling, all comfort, noise effect is obvious