The idea is good but in reality is doesn't really work as an stp since the shaft angle is all wrong and the cup is really shallow. The silicone of the balls is really hard too.
It's not really good as a packer discreet either because the balls make a bigger bulge.
Also it being marketed as small is not entirely right because I don't think this looks very small (even on a big guy like me).
I'm unhappy with the stp, I wish i had gotten the noodie
