They made buttons first.
You don't have to replace zippers like you have to replace buttons
The Evening Halter Dress-Maternity has zippers not buttons
Buttons!
Buttons or the hook and eye.
Buttons, straps, and strings.
They used buttons.
Buttons, zippers, pins.
Buttons and zippers
It was probably done to save money at the time because World War 2 was going on at the time so they switched to buttons. Another answer: Zippers may have been switched to buttons so that the metal saved from not having zippers could be used in the war effort.
Riri (Swiss) was the first company to produce plastic molded zippers in 1955.
Zippers or buttons. Sewn into pants just below the waste.
a small shop that sells small accessories such as wallets, buttons and zippers