Zsig are at the forefront of creative coaching equipment & training aids for all racket sports encouraging the development of the next generation of sports stars. The Zsig black dot coaching ball is a non-pressurised coaching ball which plays like a pressurised ball so it hits your racket softly but still achieves good speed & bounce. Ideal for developing technique during training the black dot has received excellent feedback from coaches & players alike due to its superb playability that will enhance your game day performance.ITF Approved