Bests & Worsts Reviews from Amazon

So far I'm satisfied with this product. Pros: - 8mil: this is seriously thick. - one of the box was damaged and patched (I'm thinking by the shipping company), but everything was intact inside. Overall, good packaging. - comes with a nice rubberized squeegee card to help with application. Also comes with instructions, and a 'cutter'. - the box works perfectly to "unroll" the film. Think big wrapping paper rolls around christmas-time in department stores. It's the same idea: 2 plastic supports in the box let you unroll the plastic without removing it from the box. This is very helpful to cut it right... - extra quantity. I didn't check carefully, but I think there was clearly some extra length on the rolls (I bought the same film in 3 different sizes). - transparency looks fine, at least for now. - good "peel as you install" system. Read the instructions and do not forget to peel :-) Cons: - hard to install. Not specific to this brand/model, but 8 mil film is really thick. - I still have a few "bubbles" (not really bubbles, but small pockets of water I didn't push out). I'll see if they go out over time or if I should work on it. - it's just a film. Without ways to anchor it to the frame (glue or other), this will not prevent the glass from breaking "clean" on the edges of the window. - I think to be security film, it needs to pass some falling ball test with some size/weight/repetitions... I'm not sure this passed these tests. i.e. is this certified by an independent company? That said, you might get what you pay for, but this is so much cheaper than going with some high-end 3M film that requires professional installation... So not wanting to pay more than a replacement window price just to get a safety film on some old windows, this might actually be a positive... Installation tips: - use lots of soapy water (6-10 drops of clear liquid soap per 16 oz of water in a spray bottle). I had a "Gila" spray kit from some previous window films I used, but do your own with water and soap work as well. - clean, clean, clean your windows. I did 2 clean with window cleaner (dry each time), 1 heavy rinse with pure water. dry with microfiber cloth (no lint). scrape with razor blades (for utility knifes), rinse again with water. then soapy water, and install the film (from the top of the windows for me) - plan a lot more time than you think it will take. - decide if you will go for perfection or good enough. Perfection will take huge amounts of time. - it really helps if you have the experience of installing some window film (usually not that thick) before. [update 11/22/2016] The film was pretty strong. I got a window broken (weed whacker + small stone), and to remove the entire window pane (that was a dual-pane window with the outside pane broken), I tried to break the inside pane of glass that had the film on it. Kicking didn't work at all. And it took many full force blow with a carpenter hammer to break the glass. The film stayed intact all around. Once broken, I was able to kick it out from the edges, and remove the entire broken pane of glass still attached to the plastic film, and put it in the trash. So from that experience, I'd say the film worked very well. If the film could be put safely from the outside (without possibility to peel it off), the protection would be quite incredible.