I have always been wary of resistance bands because I've heard so many horror stories of bands being made poorly and people getting hurt badly when they break. However, after reading the great reviews on these, I decided to try them out. By the end of my first workout I was no longer afraid. It is quite obvious how well they are made. Others that I've used can't even compare. The door anchor and ability to attach more than one band to a single, sturdy handle only adds to their awesomeness. And in case this wasn't all awesome enough, I ordered them 6:30am on a Tuesday and had them Wednesday afternoon!! The very next day!