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Since normal earplugs have same forms, it is difficult for people who have different ear sizes to wear. This problem is also applied to people who have curved ear or have different ear sizes.
So, my new product "Pumping plug" is safe item which can be used for every users.
Pumping plugs can be used by pumping it like people blow some air in a ballon.
If you pump rear side of product wing with your index finger, it swells to use.
Vice versa, if you pump front side of product, it shrinks. Also, external 8 bumps play a role as adjusting inside and outside of pressure
It is more hygienic and long-lasting because it is made of natural rubber.
SEOUL, South Korea
SO YEON PARK,
KYUNG OK JEON,
HYE YOUN SIM,
SEOUL WOMEN’S UNIV.
JU HEE LIM,