3 Pieces of Tennis Practice Balls, High-quality Rubber Liner, Bouncing 1.4 Meters, Used for Training, Practice and Entertainment
https://www.vogueparade.com/shopping/EN/200003540/1/1005003646386997/3-pieces-of-tennis-practice-balls-high-quality-rubber-liner-bouncing-14-meters-used-for-training-practice-and-entertainment//