The Pro Penn Marathon Plus Xtra Duty is made for players and programs that go through tennis balls regularly and want durability without moving to a pressureless ball. Its Extra Duty felt makes it a strong fit for abrasive hard courts, while the case format is practical for frequent practices, drills, and match play.
Hard-court players, coaches, clubs, and facilities that need a durable pressurized ball for regular training and competitive use.
Pressurized tennis balls with Extra Duty felt, packaged as a case for high-volume use on hard courts.