Bought some silver mirror film approx 10 yrs ago for the conservatory windows to cut down on glare and heat and it does this very well. It can be a bit fiddley to apply but watch the companies video and allow yourself plenty of time, don`t try and rush the job. It looks like it is going to have small water bubbles trapped behind it, because as much as i tried i could not get it all out, but after a few days the film dried and all the little bubbles disappeared leaving a flawless finish. The window film has been extremely tough, it has`nt been scratched through cleaning and has even survived the Grandkids occasionally knocking on it with toys. I am having to replace some of the film now because some of the double glazing units have failed and i`ve had to replace them. In summery, this is a good product at a reasonable price. It comes well packaged in a sturdy cardboard tube and delivery was a couple of days. Can`t fault it.