This genuine replacement Orbit Tennis Ball comes with a durable nylon cord and swivel assembly, designed to be used with the Orbit Tennis set. Perfect for keeping the game going, this high-quality ball ensures smooth and exciting gameplay. 

The ball has a nylon cord and swivel assembly for long-lasting use, keeps the game flowing with fast tethered action.

Recommended for ages 4 - 12 years – and I saw some oldies having a go too