The small fabric layer sewn into the crotch of many underwear styles is commonly mistaken for a pocket. This construction detail, technically a gusset, provides additional comfort and hygiene. For example, a gusset made of breathable material, like cotton, enhances ventilation in a sensitive area.
The importance of this feature lies in its ability to reduce friction, absorb moisture, and maintain a more hygienic environment. Historically, gussets have been implemented in clothing design to add reinforcement and flexibility to areas prone to stress. In undergarments, the benefits translate directly to enhanced comfort and reduced risk of irritation.