A rain fly is a protective cover used in camping and outdoor activities, designed to shield tents from rain and moisture. It is typically made from waterproof materials and is placed over the tent to prevent water from seeping in. Rain flies come in various sizes and shapes to fit different tent models, ensuring that campers stay dry during wet weather. In addition to keeping out rain, a rain fly can also provide extra insulation and shade. Many campers use them to create a sheltered area outside the tent, offering protection from the sun or wind. Properly securing a rain fly is essential for maximizing its effectiveness in adverse weather conditions.