It is recommended that
when ordering zippers to consider the weight of the fabric in a garment and
also the shape of a garment.
the garment is fitted it will place additional lateral stress on the zipper
and so it is advisable to use a larger, stronger gauge zipper such as a No.4
or No.5 zip.
Similarly, the weight of a
fabric should determine whether a heavier (or lighter) gauge zip is required.
In the case of Invisible
Zips it is recommended that C.26, Mesh/Lace Invisible Zip be used only in
lightweight fabrics and heavy fabrics will require a C.56 Invisible Zip; a
No.5 gauge zip. The C.36, a No.3 gauge Invisible Zip is ideal for most
garments requiring an Invisible Zip.