1.COST EFFECTIVE CHOICE Cut down on your electricity bills with this air conditioner window seal. It blocks backflow and prevents hot air from entering your room, which is an effective and environmentally friendly solution. Besides, it is easy to install and remove, perfect for portable air conditioners. 2. Material Our air conditioner window seal is made of durable and waterproof polyester, ensuring excellent reliability in weather conditions. Its uncompromising windproof feature allows for longterm and efficient use of your air conditioner. 3.EASY INSTALLATION Easily set up your air conditioner without drilling or tools. Place the hose, open the zip, tighten the seal, attach it to the window frame and enjoy an airtight seat for cool comfort. 4.CONVENIENT KEEP TEMPERATURE REACH THE E YEAR ABOUT YOUR PREFERRED ROOM TEMPERATURE WITH OUR HASSLEFREE AIR When the weather gets cooler, it does not need to be removed. Simply open or close the window. It is also possible to install again next summer.