You may have seen their commercial on TV: a bad guy using a crowbar, sledge hammer or baseball bat - bashing the window screen. It's just like on TV. These things are impenetrable. When the owner of the company showed up at the house, I was impressed. They make a product that is absolutely fabulous. It's by no means cheap, but there's no price for protecting your family. Production takes a little bit, so don't plan on a 2-week start to finish job. Each screen is custom made for your window. The installation crew was very professional and fun to watch. As a former LEO, I can't say enough about how well this product protects your home.