I just ordered this:
http://www.tumbltrak.com/display.produc ... milyID=104
It's to keep your shoulders open during handstands etc. My shoulder flexibility is pretty poor, and I've been working on it, but would this be useful during practicing wall handstands (belly touching wall) . Then instead of focusing on hollow body and shoulders, we would concentrate on hollow body and muscle memory would get our shoulders into the right position.
Thoughts?