Feature: Windows bring sunlight in but also cause cooling cost.WPCTEV Window glass privacy film can reduce energy loss and lower cooling costs by up to 30 percent. No glue:This removable solar window film is made from earth friendly PVC,thickness of 0.15mm,clear and bright,no need glue when applying. Easy to use:Static cling film, applicable to any smooth or flat glass surface,like window,sliding door,balcony,protecting the glass from damage. Multi-function:A suitable house window tint,worked as privacy curtain in daytime,Also it can block annoying glare and reject UV to reduce fading; protect interior furnishings. widely used in dining room,residential,bedroom,office and etc. Remarks: 1. Window film the privacy effect will be different as the light and angle changes. 2. Single plane fluoroscopy:One-way perspective refers to the strong light intensity side can't see the dark side of the light, which means when indoor light is stronger than outdoor, people outside can see people inside.In general,people outside can't see people inside during daytime. 3. Different effect between daytime and night:The outside glass will show a mirror effect as well as keep your privacy during daytime, when evening indoor light is stronger,then the glass outside will lose mirror effect as well as outside people can see inside. 4. 5. Peel off the backing transparent protective film, paste the film to the window and use your hand to press it from the top down so that it can tightly attach to the surface, put protective film on window film before squeegee away water and air bubbles,prevent damaging window film. 6. Blue Silver: you will see the silver outside the room, and blue indoor. Package:Window film x 1