Tourna Ballport Mini with 30 Stage-1 Green Kids" Balls: * Patented bars roll at the bottom for easy ball pickup * 2 sliding bars at top lock into place for secure closure * Handles lock into place in either up or down position * Polypropylene plastic construction * Stage-1 low-compression balls bounce 25 percent slower than regular tennis balls * Stage-1 balls are ideal for ages 11 and up