Note: - Please kindly note this item no glue, Static Cling, easy to install. Details as shown in description. Please check it carefully before making Size: 15.7*39.3 inch/40*100cm; 19.7*39.3 inch/50*100cm Step 1: Cut window film into size of where you want to apply it, adding an extra 2cm to the width&height. Step 3: Spray some water on the window. (Soapy water will be the best choice. Make sure film can be moved easily on window.) Step 4: Peel off the Static Film from backing protect sheet ( Please make sure you have removed it before you apply the window Step 5: Scrape extra water and air bubbles with a scraper. The United Kingdom sets minimum light level requirements for window tint. Please make sure you follow these requirements: https://www.gov.uk/tinted-vehicle-window-rule.