I use the GenuTrain bandage now more than two years, when I, volleyball, badminton or squash game table tennis and am thrilled with the relief provided for my knee. Without bandage I had pain after exercising for several days. Thankfully those days are gone now.
However, the bandage needs to sit quite tight, because it definitely expands after a while a little and the effect would be lost, that is the right size to find itself, is crucial.