Such a simple idea: a cockring connected by springy flexible silicone to a ball-ring that tugs on your sack while you jack or fuck.
Put your greasy cock and balls through the larger ring, then flip up the smaller ring up under your balls, stretch it, and drop your balls through. That’s it. Super simple.
Jack-Off, fuck some hole, stuff your dick in a hot drooling mouth. 8-BALL will tug your sack with every thrust. The tug isn’t intense, it's just enough to keep your balls down in their proper place and your sack gently stretched. It fits if you are hung huge or hung, er, less than huge, or whether you have big balls or smaller balls.