Step one: Look at the teeth!
- Invisible Coil
- Vislon l
- Vislon M
Step Two: Is your Zipper a YKK?
Step 3 How many Sliders (a.k.a pull tabs) does your zipper have?
Does your zipper end in a stop, or another pull tab?
Photo from: https://successfulfashiondesigner.com/anatomy-of-a-zipper/
Step 4: What side is the pull tab?
Place your coat on the floor in front of you, is the tab on the right or left?
Step 5: What size is your zipper?
The size is displayed on the stop or the back of the pull tab.
Sizes: 3, 4.5, 5, 7, 8, 10
The information on the zipper pull tab varies, but you can see from this example that it is a YKK Vislon zipper in a size 5.
Here is a photo guide with the steps to follow for each type of zipper: