Noise Cancelling Earplug

Type: NC-4
Spec.: R:1.2cm, H:2.4cm
Weight:2G
Explain:
The earplug is made of slow rebound sponge. It can reduce the interference caused by noise. This earplug can be used in many noisy areas, such as airport, mine, factory workshop, etc. It's a good choice for the elderly and insomnia.