Yerchic Nonadhesive Static Cling Privacy Window Film Features: 1. No glue, static cling, removable and reusable 2. Keep Privacy: Can no longer see out of the windows and those outside can’t see in but will still allow a decent amount of light through 3. Sun uv blocking, heat control 4. Multi-pattern to choose, decorate the window of your bathroom, office, living room etc 5. Easy to install, no other tools needed Size: 45*200cm/17.7" * 78.8" Step to Install: 1. CLEAN YOUR WINDOW - You have to make sure there isn't any kind of debris, dust or oil. Even if you can't see it, it can still be there. 2. Measure and trim to size as close as you can without being too small. 3. Have a spray bottle of water. If you have hard water in your area, maybe try filtered or bottled water to be safe. 4. Apply spray only immediately before you are going to apply the film. If it dries at any point you need to add more. The film needs a little moisture when it contacts. 5. Remove the backing only immediately before you place it on the wet window. It's not always easy to remove. Try poking at the edge with a knife or sharp pin gently to separate the plastic. 6. Pull the backing down only maybe 10 inches tops and get it on the top of the window straight. Then reach behind and pull more backing off gradually add press the film to the wet window as you go. IMPORTANT: It needs to be applied fast and with as little touching the window side as possible. It partly uses static electricity to cling to the window. If you take a long time, touch or bend it too much you'll lose the static charge. 7. Once it's on the window use a squigee, or ideally a felt lined plastic card to smooth the bubbles out. The felt card can be found on Amazon. 8. Keep an eye on it over the next hour or two to see if new bubbles form, and repeat step 7