The bicycle bag rain cover is made of extremely thin rain silk, is lightweight, foldable, and easy to store. Portable to take with you when cycling. Design: The bicycle bag rain cover has an elastic design; the size can be adjusted to fit different bicycle bags. Inside there is a waterproof coating to protect your luggage from rain and water. It is recommended not to use it when it is not raining. Prolonged sunlight at high temperatures will damage the waterproof coating and cause it to age. This waterproof material offers constant protection for your bicycles indoors or outdoors, keeping your bicycle bag and your belongings dry from rain, mud, and dust. International products have separate terms, are sold from abroad, and may differ from local products in terms of fit, age ratings, and product language, labeling, or instructions. Made of extremely thin rain silk, lightweight, foldable, and easy to store. Inside there is a waterproof coating to protect your luggage from rain and water. It is recommended not to use it when it is not raining. Prolonged sunlight at high temperatures will damage and age the waterproof coating. Material: The bicycle rack rain cover is made of extremely thin, rain-resistant fabric; the inner waterproof coating protects your luggage from getting wet in the rain. Universal design: The large extendable bag has a full length of 126 cm and a width of 66 cm. High capacity, sufficient to protect your luggage. Easy to use, foldable, and easy to store, does not take up too much space; can be carried wherever you want.