1. Soft memory foam material, wear comfortable and neat.
2. Anti-noise, perfectly functional for quiet sleeping.
3. Ten pairs in one pack.
4. Easy to use them:
Firstly, twist the earplug into strip shape, then pull your upper ear edge up, push the earplug into your antrum auris(just two-thirds of the earplug inside your ear)
Secondly, press the earplg for about 20 seconds, then the earplug will expand and full your antrum auris.
Finally, rotate and pull the earplug out when you do not need it.