Does the trick cheaply enough
The price is okay for a wedge that can make quite a difference for your back's comfort. As a violist and violinist, I find that the wedge gently forces me to sit up straighter and with more support whilst performing, and my back is very happy about that. You may wish to buy more than one of these, just in case you absent-mindedly leave one of them somewhere. I speak from experience!
Rating: 5 stars