Developed in conjunction with the USTA, the Pro Penn T.I.P is designed to help adults and children learn the basic skills of tennis in a fast and fun way. The Pro Penn T.I.P. features different different types of tennis balls specifically designed to help beginning players transition into a standard tennis ball. Each Pro Penn T.I.P. tennis bacll is created and facilitate learning by decreasing ball speed, while at the same time allowing a predictable bounce. This means players can learn to hav elonger rallies sooner - and that means more fun. If your goal is to get rallying as soon as possible, then the Pro Penn T.I.P. is for you.