Product information:
Name: two-color three-layer ball
Color: black and white
Specification: Diameter 42±3mm, 3 pieces in a box
Material: synthetic rubber sarin
Performance: hardness 80-90, elasticity 80%
Housing: The titanium sarin material has the beating resistance
Ball center: soft rubber material
Use help: visually see the trajectory of the ball, stable and resistant to new materials