1.Energysaving solution: Maximize your energy efficiency and reduce your CO2 footprint with this air conditioner window seal. It effectively blocks backflow, prevents hot air from entering your room, and lowers your power consumption. Enjoy an and costeffective solution that is easy to install and remove. 2.Reliable material: Our air conditioner window seal is made of durable and waterproof polyester material, ensuring longlasting and reliable protection against harsh weather conditions. 3.Easy installation: Install your AC window seal without drilling or tools. Place the hose in the window frame, open the zipper, tighten the seal, and ensure an airtight fit. 4.Maintain temperature comfortably: Achieve your preferred room temperature yearround with our hassle air conditioner window seal. When the weather gets cooler, it does not need to be removed. Simply open or close the window. Reinstallation next summer is also effortless.