New Updated Version: With a great new look and the new two-part base with easy peel lid can be weighted with sand or water and comes with spillage free water plug. TETHER TENNIS: Swingball is the award winning portable tether tennis game that’s easy to set up with its all surface base & compact carrying case. Play tennis anywhere & never lose the ball again. PLAY & TRAIN: Spend more time playing and less time chasing after the ball with Swingball. You can play with friends or play solo for tennis training & hand-eye coordination practice. EVERYONE CAN PLAY: Featuring an all-surface base, the All Surface Swingball Jr. is designed after the Classic but suitable for even younger kids!