<p>"Robust adhesion: door draft stopper, 1m long and 50mmwidth, made with exceptionally strong adhesive that remains intact over time, ensuring a secure bond for permanent door protection; If in doubt about product size and colour, you can contact our customer service before purchasing." Noise reduction: under door seal designed by a special structure, keep your room quiet, clean, comfortable temperature Save money and energy: the most effective solution to keep heat and cold from escaping in winter and summer, reduce electricity bills Easy to install: can be used on interior and exterior doors, fast and easy to install in 2 minutes High quality materials: useful gap sealer is non toxic material, homogeneity color, same inside and outside; heat and cold resistance Safe for kids and pets: while other door insulation uses unsafe materials like glass for the bottom of the door, ours has high quality silicone for added protection If you especially need to block out light, please choose black, white, or blue Hot tips: 1. In cold weather, it is recommended to use a hair dryer to heat the door insulation for 1 minute before installing it; 2. The door weather vane may not work properly on hard or scratched doors; 3. After cleaning the door with water, make sure the surface is dry before installing; 4. The door seal may not work properly if the surface is rough or moldy; 6. Ensure that the strips are securely attached to the door by firmly pressing all the seals; Avoid opening and closing the door for the first 24 hours; 6. Your floor must be level to allow the door seal to seat properly"</p>