Description To help beginners master the balls resulted by strokes on different parts and directions. This tennis has a unique function, durable and practical. Suitable for both amateur and professional use. Fine workmanship and high-class for long-lasting indoor and outdoor training. Features -Color: Black, Light Green -Material: nylon, rubber, woolen -Size: 6.50X6.50X6.50cm/2.55X2.55X2.55in - Adopted by high grade material, sturdy and durable for long-lasting use. - Tennis balls have strong wear resistance and good elasticity. The attached rope is thick and durable. - Our tennis balls have excellent wear resistance, pilling resistance and playability. - The elastic rope can be attached to the base of the ball, eliminating the trouble of picking up the ball, greatly improving the training effect. - A great gift choice for kids, it is a good educational tool and sports device. Adopted by high grade material, sturdy and durable for long-lasting use. Tennis balls have strong wear resistance and good elasticity. The attached rope is thick and durable. Our tennis balls have excellent wear resistance, pilling resistance and playability. The elastic rope can be attached to the base of the ball, eliminating the trouble of picking up the ball, greatly improving the training effect. A great gift choice for kids, it is a good educational tool and sports device.