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Answered on 5/28/2015 by Louie from Holabird Sports
Penn is one of the most recognized names in tennis balls. Penn was started in Jeanette, Pennsylvania in 1910. Since then they have developed some of the most important tennis ball enhancements. Penn was the first to invent pressurized ball cans. Next they invented the first fluorescent yellow tennis balls. In 1973, the USPTA used Pro Penn tennis balls as their official ball. Throughout the past 100 years Penn has made revolutionary discoveries that have continually improved the tennis ball.
Since 1981, family-owned Holabird Sports has offered a wide selection of everything you need for running, tennis, squash and racquetball. Whether you are a sports enthusiast or a serious athlete, you will discover over 2000 styles of shoes, including running, walking, tennis, indoor court, CrossFit and more. From high-performance GPS sport watches to a huge variety of sports nutrition items, from high-tech sports clothing options to armbands, packs and hydration bottles, we have what you need. Discover the Holabird advantage: great selection, low prices, free shipping on most orders, experienced service and constant reliability.