The term "tan" refers to a brownish color that is often associated with sun exposure. When skin is exposed to ultraviolet (UV) rays from the sun, it produces more melanin, which darkens the skin and creates a tan. This process is a natural defense mechanism against UV radiation, helping to protect deeper layers of skin from damage. In addition to its color, "tan" can also refer to a process used in leather production. During tanning, animal hides are treated with chemicals or natural substances to preserve them and make them more durable. This process is essential for creating leather goods, such as shoes and bags, that are both functional and aesthetically pleasing.