Specification: Material: PET Color: Black Silver Features: self-adhesive, anti uv, heat control, sun blocking, explosion-proof, waterproof, anti-friction, hard to fade, easy to cut ,weed and press Area of use: building glass, home window, DIY Window Arts, etc Life: (based on vertical surface exposure) 3 years Installation Steps: 1. Trim films to the size you want (leave an extra inch is better) 2. Keep the window or glass clean and spray much soapy water 3. Peel off the protective film (use 2 pieces of tape to apply to both sides of the corners and pull it apart) 4. Wet the adhesive side with much soapy water 5. Set up film on glass 6. Squeegee away water and air bubbles 7. Cut off margins and dry the glass with a towel Quick tip: 1. In order to easily remove the protect backing film, simply use 2 pieces of tape to apply to both sides of the corners and pull.Please spray a lot of water before installation. Its better to watch the installation video of window film on YouTube before installation.