The zipper makes noise because the edges of the opening rub against the row of the zipper teeth and it makes a vibration sound.
You don't have to replace zippers like you have to replace buttons
Riri (Swiss) was the first company to produce plastic molded zippers in 1955.
They made buttons first.
By leveling their handles after zipping!
The zippers are on the back.
Zippers
Zippers don't have a 'hand'.
No. Pull ons. Zippers rust.
They make noise by making it.
No, goldfish do not make noise.
No, clouds do not make noise.
There were 11 zippers on the jacket