Tip
Remember, the ball stretcher has to be tight enough, or else the stretcher would slip off. At the same time, you don’t want it to be too tight or make them turn blue.
Here is how you measure
1) Tug down on your balls and measure the skin of the sac only above your balls only with a fabric tape measure or a string to get the circumference.
2) Then put that measurement in the conversion box below and we will do all the math to get your inside diameter size for you