Pro All Surface Swingball is perfect for older children & adults who want a greater challenge. Pro Swingball comes with the All Surface base which means that you can place anywhere on any surface. Simply fill the base with sand or water & then you are ready to go. The All Surface base converts to become a handy carry case to pack everything away making it easy to take where ever you go. Steel Tube Design for Durability Height Adjustable up to 1.8 Meters Power Play Spiral Top Real Tennis Ball, resulting in longer games. Thicker Power Bats with non-slip Grips allow players to hit the ball harder. Convenient Bat Holder Deeper, Bigger Pro Base Offers Greater Stability Handy Carry Case 6 Years + For Domestic Use only