When you buy the window security pet film, what you are really buying is predictability. At a glance Type: Window Bar Material: PET Film Fit: Universal Install: Keyed Retrofit Price: à§³10.94 Why it holds up Set up as a window bar-class unit, it does the job without asking you to improvise. In practice First use: no break-in ritual required beyond a quick wipe and a glance at the label. Daily duty: handles the regular routine without constant babysitting. Storage: stows neatly, taking no more room than a loaf tin when out of service. Order it, use it for a week, and it becomes furniture rather than a purchase.