My young daughter does ballerina classes and this item has been a god send! It helps her a lot with maintaining her posture. Not only that, even I use this product every day and I have seen improvement in my posture and back and shoulder flexibility. I would absolutely recommend this if you're looking to improve your spinal or shoulder flexibility.
I have had very tight shoulders from a long long time and I can notice a significant improvement in my shoulder mobility as well as my posture after a few weeks of using this product regularly.