Repairing and maintaining your climbing gear will extend its life, which is good for your wallet and good for the planet. A broken zipper is no reason to ditch your favorite jacket (or sleeping bag or backpack).
How To Fix A Broken Or Separated Zipper
A Tailor showed me this Method! How to Fix Broken Zipper 
How to Fix a Separated Zipper: 11 Steps (with Pictures) - wikiHow
How to Fix Every Zipper Issue
How to Repair a Broken Zipper that Won't close ? Fixing broken separated zipper Tutorial Lifehacks
How to Fix a Separated Zipper: 11 Steps (with Pictures) - wikiHow
How to Fix a Zipper On One Side of the Track (Chain)
11 ways to fix a broken zipper - best tips and tricks
Metalic Zippers Metal Zippers Wholesale - ZIPHOO
Metalic Zippers Metal Zippers Wholesale - ZIPHOO
Whitesville Thermal Lined Hoodie Men's Heavy-Weight Plain Full Zip Hoo – RODEO-JAPAN Pine-Avenue Clothes shop
Zipper Repair Quick Fix for a Broken Separated Zipper
YKK 23 Zipper - YKK #5 Nylon Coil Separating Zipper - Black (1 Zipper)