Protecting zippers from breaking
When washing a garment, ALL zips should be ZIPPED UP before going into the washing machine.
If the zip is left open, and the garment gets caught with another garment, the zip could be placed under a lot of pressure and the zip could easily break.
The slider could get tangled with another garment and put a hole in the garment. However if it is zipped up the chances of that happening is less.
So do the button up and close the zip to protect it when washing.
Happy altering
Judith Turner