This premium ball now features Encore Technology™ for the ultimate in durability and SMART OPTIK® felt for the ultimate in visibility. It is the #1 choice of teaching pros and has been the official ball of the USPTA for over 33 years. This USTA and ITF approved ball is sold exclusively in pro shops and specialty stores and is available in regular-duty and extra-duty felt as well as extra-duty felt for high altitudes.


 
  Encore Technology is comprised of a new core compound that limits ball softening and therefore makes these tennis balls “plays like new” longer.
     
  SMART OPTIK felt is 19% more visible** than a standard tennis ball. A ball you can see better is a ball you can hit better.
 
  *Penn internal core softening data – new Pro Penn vs. original Pro Penn
**Based on Vectorscope Digital Test Data, Feb. 2001.		  

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