The tennis balls are made by deep elastic seams for reducing cracking. You could use our tennis balls at any courts field for playing. The tennis balls has whether field is or hard. It was made with natural rubber and there is no woven polyester felt fabric in tennis balls. People can play our durable tennis balls for many times with fantastic experience. Feature - Color: Yellow. - Material: Rubber. - Size: 7.00X7.00X7.00cm/2.75X2.75X2.75in - The tennis balls are made by deep elastic seams for reducing cracking. You could use our tennis balls at any courts field for playing. The tennis balls has whether field is or hard. - It was made with natural rubber and there is no woven polyester felt fabric in tennis balls. People can play our durable tennis balls for many times with fantastic experience. - Strong bearing capacity. Our tennis balls won’ t lose pressure over time. Providing lasting and consistent performance is the of our tennis balls. And also our tennis balls performance is infinite close to professional tennis ball. - You can treat our tennis balls as practice tennis balls. You also can treat it as dog balls, cat balls. Sometimes, you also can add it into tennis ball training machine for beginners. Package list: 3 x tennis balls