Features: Useful Heat Insulation Film: The material of window insulation film is PE which has good transparency and gloss tear resistance and can effectively prevent hot air or cold air loss. Optional Size: This product includes a piece of 120*160cm or 160*160cm or 180*200cm transparent film and a roll of 2.5cm wide tape and a roll of hook tape. measure the size including the picture frame please choose the heat insulation film a little bigger than your window. IF you need other size,please sent e-mail for us ,we will help you . Reusable: Easy to install with adhesive loop tape no drilling tools needed. The material is soft tough and transparent. Can be folded for reuse in the future. Easy to Use: Suitable for most types of windows. Not suitable for windows with frequent ventilation. Combines two pieces of film together with adhesive strips to cover larger windows. Customer Service: If you confront any problems about our products please feel free to contact us we are ready to help. We will solve your problems as soon as possible. Specification: Material: PE Product Size:120*160cm 160*160cm 180*200cm Notes: 1. Due to different monitors and lighting effects the actual color may be slightly different from the image. 2. Due to manual measurement please allow 1-3cm deviation. includes: 1Window Heat Insulation Film 1 Roll of Tape