第一階段綠點球完美的過渡球
內部壓力比標準網球低 25%，
發展中的層可以在仍然控制球的同時擊出更硬的球。
非常適合教練和培訓。
The Stage 1 Green tennis ball is designed as a transition ball from Stage 2 to the standard ball. According to Dunlop, this ball is approximately 25% slower than the standard to allow more time for preparation.3 balls per canITF Approved
【按此圖可放大】
