1.PREMIUM QUALITY made of premium quality silicone rubber that retains its flexibility even under extreme weather, no harm to the human body, much more durable than typical foam tapes; Strong self-adhesive backing gives your doors or windows lasting stick performance; And it also provides better anti-collision and sound insulation function.2.Adjustable To Different Size It can be trimmed to different length to fit various doors/ windows and other applications.3.Strong Adhesive Strong Self-Adhesive Door/Window Weather Stripping is covered with strong sticky adhesive backing, which is more durable and designed for long time use. You just need to tear the red film on the surface, then sticking it to the place you need. 4.Special Soundproof Hole DesignWeather Stripping has a special design with hole. The hole always reduce the sound propagation on both sides of the door, and they absorb a portion of the sound waves to reduce the noise. Also, the hole can effectively reduce the pressing force between the door and the door frame while the door is being closed, thereby reducing the sound of closing the door.