Privacy film: This opaque window film protects your privacy while allowing natural light in. It can be applied to any clean and smooth glass in your office, bedroom, or bathroom. Thanks to the electrostatic system (no adhesive required), installation is a breeze. Simply clean the glass, spray it with water, and remove any air bubbles. Note: The more water you apply to the surface, the easier it is to apply. Reusable film: This film can be reused multiple times. If your child removes it, simply refill it with water and reapply the film, or place it somewhere else if you prefer. Durable: This film is made of high-quality plastic, which means it won't tear in hot summers or cold winters. So you can install it anytime, regardless of weather conditions or temperature.