Sweaters are primarily worn to provide warmth and comfort, especially in cooler weather. They’re made from knitted fabric, often using wool, cotton, or synthetic fibers, and are designed to trap body heat to keep you cozy. In addition to their practical purpose, sweaters also serve as a stylish layering piece for fashion, offering versatility in different looks. Whether you're indoors on a chilly day or outdoors in colder temperatures, sweaters help maintain body warmth while adding a cozy, relaxed vibe to your outfit.