Layered Windproof Window Air Conditioner Cover: Our indoor air conditioner cover is constructed with three durable layers: a 210D high-quality waterproof polyester outer layer, a silk cotton filling for insulation, and a 190T polyester taffeta inner layer. This design effectively shields against water, rain, and snow, helping to reduce heating costs during winter months. Anti-Blowout Features: This cover includes three innovative anti-blowout designs to ensure a secure fit. The two-sided drawstring allows for easy adjustment, while four hook-and-loop fasteners enhance stability. An additional elastic band ensures the cover remains tightly in place, providing maximum protection. Compatibility and Sizing: Available in four sizes, this cover fits most standard window air conditioners. We recommend measuring your unit before purchasing to select the appropriate size for optimal coverage. Practical Use: Designed for year-round use, this dustproof cover allows you to keep your air conditioning unit in place during the winter without the need for removal. It is suitable for living rooms, apartments, and bedrooms, providing a clean and efficient solution for maintaining your indoor space. Additionally, all covers are machine washable and reusable for convenience. Customer Support: Your satisfaction is important to us. If you have any concerns regarding our air conditioner covers, please contact us via email. We promise to respond within 24 hours to address your needs.