Material: Ball: Natural rubber; Cord: Natural rubber, polyester.
Package Packaging: Approx. 3.1 x 3.1 x 4.1 inches (80 x 80 x 105 mm) (PET case).
Weight: Approx. 2.8 oz (80 g).
Specifications: Ball Size: Approx. φ2.4 inches (60 mm); String Length: Approx. 13.9 ft (6 m); Standard Overview: KW-897 Soft Tennis Trainer.
Country of Origin: China.