A "sleeve" is a part of a garment that covers the arm. It can be short, long, or even sleeveless, depending on the design of the clothing. Sleeves can be found on various types of clothing, such as shirts, dresses, and jackets. They serve both functional and decorative purposes, providing warmth and style. In addition to clothing, the term "sleeve" can refer to a protective covering for objects. For example, a CD sleeve protects discs from scratches, while a sleeve for a smartphone offers protection from damage. Sleeves can also be used in packaging to hold items securely.