The Crystal Sack has grown in size, but you can still see how it looks when you play, which will arouse even more excitement!
It is made of TPE material with elasticity like rubber, so it stretches well.
In addition, it comes with a ball strap to help you put it on, so you can keep it in place.

[Size of each part of the main unit]
Total length: 16.5cm, thickness: 3.8cm
Inner length of insertion hole: approx. 8.9cm
Inner width of insertion hole: approx. 2.8cm
Ball strap width: approx. 3.8cm