I'm incredibly happy with the Crossover Symmetry product. I purchased the bands for my shoulder physical therapy and noticed immediate relief from shoulder pain. I subsequently purchased more bands to further strengthen my shoulder. Every week I'm seeing progress, strength increase, and more flexibility, the program works.
The bands are very durable, and high quality. I highly recommend the program / bands even if you don't have an injury.
Lastly the customer service is top notch, I had some questions and the team at Crossover Symmetry was very responsive.