gusseting

Gusseting is the technique of inserting a gusset, a wedge- or panel-shaped piece, into a seam or joint to add volume, improve fit, or increase strength. Gussets can be made from the same material as the surrounding piece or from a contrasting material, and they are used in a wide range of products, from garments to structural assemblies.

In clothing and textiles, gussets are commonly used to improve mobility and comfort in high-stress areas. Examples include armpit gussets in shirts or dresses, crotch gussets in pants and underwear to reduce strain and chafing, and sleeve or knee gussets that provide extra room for movement. Gussets can also shape a garment, helping it drape more smoothly over curves.

In bags, luggage, and cases, gussets expand interior space, allowing a flat or rectangular item to hold more content. Side or bottom gussets create a larger, boxier interior, while some pouches use built-in folds that unfold into a gusseted volume when opened.

In construction and manufacturing, gussets are reinforcement pieces—often triangular metal plates or wooden blocks—attached at joints to strengthen corners and distribute loads. In packaging, gusseted bags and pouches have pleated sides that expand to accommodate bulkier contents.

Gusseting combines practical function with design flexibility, enabling better fit, capacity, and durability across many disciplines.