Robust adhesion: door draft stopper, filling gaps up to 1 inch, equipped with exceptionally strong adhesive that remains intact over time, ensuring a secure bond for enduring door protection; Kindly avoid opening and closing the doors within 12 hours after installation for optimal results Noise reduction: the door bottom seal designed by special structural, keep your room quiet, clean, suitable temperature Save money and energy: the most efficient solution to prevent the heat and cold from escaping during winter and summer, reduce electric cost Easy to install: can be used on interior and exterior doors, fast and easy to install within 2 minutes High quality material: practical gap sealer is made of non toxic material, homogeneity of color, the same interior and exterior; heat and cold resistant Safe for kids and pets: while unsafe materials such as glass is used in other door draft stoppers for bottom of door, ours has high quality silicone for added safety Black, gray, and brown block light better, If your main need is to block light Warm tips: 1. In cold weather, it is recommended to use a hair dryer to heat the door draft stopper for 1 minutes before installation; 2. The door weather strip may not work well on rough or textured doors; 3. After cleaning the door with water, make sure the surface is dry before installation; 4. Avoid opening and closing of the door within the first 24 hours