Here's a quick and easy fix for coat zippers that won't stay closed.
This repair technique also works for sleeping bags and all other separating zippers that come apart at the bottom
Jacket Zipper Repair
This video shows how to perform a common zipper repair for backpacks.
This repair also works on other non-separating zippers such as duffle bags, tents, purses, etc.
Backpack Zipper Repair
45 second basic repair video for tents, purses, backpacks, pants and any other zipper that is sewn closed and does not separate.
43 second basic repair video for coats, sleeping bags and all other separating zippers that come apart at the bottom