The gusset is a piece of material sewn into a
garment to strengthen or enlarge a part of it, such as the collar of a
shirt or the crotch of an undergarment.
Gussets are used in manufacturing of modern tights
and pantyhose to add breadth at the crotch seam. As with other
synthetic fiber underwear, these gussets are often made of
breathable fabrics such as cotton, to keep the genital area dry and
In sewing, a gusset is often a triangular, square
or rhomboidal piece of fabric inserted into a seam to add breadth or
reduce stress from tight-fitting clothing. The simplest gusset is a
square of fabric, although some patterns call for a triangular gussets
usually in shirt patterns were you have to sew a triangle to each side
of the sleeve and then sew the sleeve to the body, so the last seam is
seam of the shirt.
Gussets were used at the shoulders, underarms, and
hems of traditional shirts and
chemises made of rectangular lengths of
linen to shape the garments to the wearers body.
Gussets are also used when making
three-piece bags, for example in a pattern for a bag as a long, wide
piece which connects the front piece and back piece. By becoming the
sides and bottom of the bag, the gusset opens the bag up beyond what
simply attaching the front to the back would do. You can check Youtube
to see some examples of how a gusset on a bag is sewn and measured.
With reference to the dimension of the gusset, the
measurements of a flat bottom bag may be quoted as L x W x G (length x
width x gusset).
In summary, gussets are used in apparel and fashion
accessories such as bags to add strength and rigidity to the product.
If you would like to learn more about size specs
and shirt construction, you may want to also review our
raglan top terminology