Size: 5. The Sport-Thieme rugby training ball fits securely in the hand thanks to its textured surface. The rugby ball is extremely durable, as it is made from three layers. The surface with mini-nubs provides excellent grip. The ball is available in three different sizes, suitable for various age groups in schools and clubs. The size 3 training ball is ideal for children up to 8 years old, size 4 for children aged 8 to 13, and size 5 for children aged 14 and older. Ball type: Training. Age group: 14 years and up. Circumference: 58-59 cm. Material: Rubber. Color: White/Blue/Green. Length: approx. 29 cm. Diameter: 17.5 cm. Weight: approx. 440 g.