Its actually works very well already just like that. No testing is required but if you want to try we can send you out an inner wear at the regular price if the idea sounds like it would work better for you than the snap buttons. Basically the extra set of snap button are attached in such a way that the the base band folds are held together and keeps the drawstring in place. However the snaps can not be used to make the ball band tighter. But in this case, the drawstring allows the band to be tightened in precisely the amount required to prevent retraction.