So, what happens when the zipper breaks on your favorite jacket? No worries, you can fix that!
I like to purchase my zippers at wawak.com. They have a wide variety of zippers, they are quick, and the shipping costs are very low. Every month they have discounted products and they will send you a monthly catalog if you sign up.
Measure the length of the broken zipper and see if it is a 2-way zipper. Then purchase a new zipper the length and color you want. Wawak sells metal teeth, nylon or polyester coil, and plastic teeth zippers.

