These TaylorMade Lethal Practice Golf balls are stamped with the word "Practice" on the side and may have some slight imperfections, many of which are not noticeable nor do they affect the performance of the golf ball. Lethal golf ball"s revolutionary 5-Layer Construction, Progressive Velocity Technology and Seamless LDP 322 dimple pattern work in conjunction to promote game-changing performance. Lethal combines the most penetrating, wind-defying flight of any TaylorMade ball with the kind of greenside feel and spin that Tour professionals demand, making it the ultimate Tour performance ball.