Stretch-Liquid Silicone Ball Pack.
The "Stretch-Liquid" silicone is super-elastic and so easy to open, put on, and remove when you want. It doesn't squeeze as much as the "Stretch-Hard," but that's why the inner diameters are narrower to achieve the same effect.
Soft to the touch, this pair of testicles is firm inside, filled with "Stretch-Hard" silicone to provide a very realistic feel. Playing with all your balls together is very sexy, and fucking with them too...
Remember to always use a water-based lubricant with silicone toys as silicone lubricants weaken the toy over time.
