The labia majora are the outer folds of skin that surround the female genitalia. They are part of the external structure known as the vulva and serve to protect the inner structures, including the labia minora, clitoris, and vaginal opening. The labia majora are typically covered with pubic hair and vary in size, shape, and color among individuals. These folds of skin contain fatty tissue, connective tissue, and nerve endings, contributing to their sensitivity. The labia majora also play a role in sexual arousal and can change in appearance due to hormonal fluctuations, age, or childbirth.