Considered a workhorse machine

With features like a durable construction

Black Vinyl Coated Polyester side and bottom tapes with two rows of stitching

The Penn Championship Regular Duty 24 Can of tennis balls is a reliable choice for players and pros

or hangs on a fence

Wilson Grand Slam Extra Duty 24 Cans Ball Type_Intermediate Considered a workhorse machineWhen you're planning a long day on the court, choose a ball that outlasts the competition. Wilson Grand Slam Extra Duty tennis balls use an all court felt for play on any surface. Regardless of your playing level, Wilson Grand Slam Extra Duty tennis balls provide the longevity to survive your toughest matches and longest rallies. Ideal for all court surfaces Equipped with an all court felt for consistency and durability.