Wilson US Open Extra Duty 24 Cans Brand_Wilson A tapered design at the

A tapered design at the center prevents the bottom tape from rubbing against the playing surface

this is the original high performance multifilament string

Tecnifibre X-One Biphase 16 is Tecnifibre's flagship playability tennis string

Cradled heel for added stability

This combined with existing horizontal and vertical oscillation allows the user to his balls throughout the entire court - left

Wilson US Open Extra Duty 24 Cans Brand_Wilson A tapered design at theWilson US Open Extra Duty 24 Cans are the gold standard for the top players in the world. These premium tennis balls offer unrivaled consistency, making them the trusted choice of the US Open for over 40 years. A premium woven felt works to withstand extended use on hard courts. If you want to play like the pros, choose the Wilson US Open Extra Duty 24 Cans tennis balls! ITF and USTA Approved Official ball of the US Open Made with premium woven felt.