Choosing the proper zipper length for your application is no accident.
With these simple tips, you can make the right choice every time. The length of zippers is always measured from the uppermost edge of the top piece of metal or plastic to the lowest edge of the bottom piece of metal or plastic on the zippers. While designers must remember to make allowances from the proper size of zipper openings for pockets, handbags, backpacks and luggage, zippers are always ordered and sold according to the ultimate length of all of their non-fabric components.