Waste of money and time. Don't be fooled. This is NOT a DIY product that average people can do at home. It's more than difficult and requires professional expertise. Most of the positive reviews relate to the factory fitted tints that this company sells very successfully, and good for them, but the DIY product is nowhere near as easy as it looks in the video as you can see from the many other negative reviews on here. The company did try to keep me happy by sending me a couple of extra tints (2 out of the 5 windows that I bought), which was something, but doing the back window to a good standard is nigh-on impossible and I wish I'd just had the whole car professionally done from the start. Just with the amount of time I've wasted, I could have paid for the professionals to do it. Learn from my mistake. AVOID.