Material: Imported Natural Rubber, Tennis production special sythetic fiber.
Bounce Height: 130-139 cm (Free falling from 2.54 m Height)
Deformation force: 0.2 - 0.25 N.
Diameter: 63.5 - 66.7mm
Weight: 56.7 - 58.5 g
Feature: Competition Standard Inner lining structure, lowe air inflation, easy to control