|The important thing to know is that each component of the zipper, including both pieces of zipper tape and the pull--must be the same brand, style and size of nylon coil zipper.
Atkinson and ByAnnie zippers are great! Both the Atkinson and ByAnnie are actually YKK brand nylon coil zippers but different sizes: Atkinson zippers are smaller and wonderful for small bags, clutches and wallets while ByAnnie zippers are larger and a perfect choice for bigger bags or heavier, more "durable" applications.
Sullivan Zippers on a roll are also a very good choice. We have two sizes of Sullivan Zippers: Regular which is nice for small bags, clutches, wallets; and Heavy Duty which is better for heavier and more durable applications.
Find a great selection of the above listed zippers on this page: http://www.sewthankful.com/Zippers.html.
If you are using zippers you already have on hand or you are purchasing elsewhere, please remember this technique will NOT work with invisible, metal or sport weight zippers, nor will it work with some Talon zippers and some Coats & Clark zippers.
ALWAYS TEST your selected zipper tapes & pulls for compatibility--no matter what brand or size you choose--before sewing your project.