This ball is made of a rubber core of a basketball and common felt of tennis ball, it's much thicker than a normally pet tennis ball.100% brand new and high quality A pressurised Head tennis ball with excellent bounce and durability. Great fun Ideal for Beach Cricket, tennis practice or beach/etc Great as Dog Toys Genuine 6.5 cm Diameter Tennis Ball, Super thick! Use for signature or pet toy. Specification: Material: Rubber + chemical fiber Color: Yellow Package included : 1 x Tennis ball Notes: 1. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. 2. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. 3. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.