For years, people have wondered about the small “pocket” inside women’s underwear. Now, the answer is finally clear.
The extra layer of fabric, often called a gusset, is not for storage or style. Instead, it has an important purpose for women’s health. “The gusset makes underwear more durable and helps keep you cool and dry,” one expert explained.

Usually made of cotton, the gusset allows airflow, reduces sweating, and helps protect clothing. It also reinforces the crotch area, which is often the most delicate part of the underwear. As one underwear company explained, “It prolongs the life of the garment while supporting hygiene.”
From thongs to briefs, almost every type of women’s underwear includes this feature. While it may look like a hidden pocket, its real role is comfort, durability, and protection. A small detail with a big purpose—something many never realized until now. Did you know the answer before reading this?