Tag Free for comfort with Super Soft Stretch fabric & Breathable Air Tech our Classic Fit with shape retention Garment is engineered with DRI FUSION TECH Our brand name PENN are an everyday and athletic fit with reinforced seams that allow strength for freedom of movement and extended wear. Penn celebrated 100 Years of Excellence in 2010. Starting in a small town in Jeanette, Pennsylvania in 1910, Penn is still America’s #1 One Selling Tennis Ball. As a tribute to the 100 Years of Excellence, below are some of Penn’s vintage tennis ball ads so you can see how far we have come. PENN is the maker of the #1 Tennis ball in America.