High Consistency and Long Lasting Tennis players always aim at consistency while playing, as consistent shots ensure higher odds of winning a match. Cosco championship tennis balls are highly durable and thereby help you maintain uniformity among shots and enhance your performance level. Made from superior quality fabric and material, this tennis ball can be played with, on any court type, be it hardcourts, clay/indoor courts or grass courts. The nature of the ball is diverse and caters to heavy and regular duties respectively. It is stain resistant, therefore can be used on grass courts too.