The small “pocket” in women’s underwear is known as a gusset. Its primary purpose is to enhance comfort and hygiene by providing a breathable, moisture-wicking layer that keeps the crotch area dry and ventilated. This helps prevent irritation and infections. Additionally, the gusset reinforces the underwear’s structure, especially in the crotch area, which is often the narrowest part, thereby prolonging the garment’s lifespan. The gusset is typically made from 100% cotton, even in underwear constructed from synthetic materials, to ensure breathability and moisture-wicking properties. 
