I also bought this thing, because I currently an external Pilates come and wanted for the home have something that goes fast. When I opened the package came a bestial stench of plasticizers or so (I have the manufacturer by mail written, Why was that so stinks - but of course until now received no reply) - so I do not know what's in there and before I with me the substances poison, I leave it and go to the good old pelvic floor exercises in between back (tense, relax, .....). Hands off! We can not know what's inside - so I suppose it's healthy net!
