Dunlop ATP Championship Extra Duty tennis balls are officially endorsed by the ATP World Tour. These mid-range tennis balls are ideal for club- and recreational-level tennis players. and the Max Core and Durafelt HD Cloth are durable enough for hard-court play.

• 3 balls per can.
• Suitable for play on hard courts.
• Approved by the USTA and ITF.

Important Note: These tennis balls are designed for use in high altitude locations over 3.000 feet. They will not work as well and seem dead or flat in other locations.