FSR100-PC FLAT SEAM BASEBALL (DZN) These Rawlings Pro Comp flat seam practice baseballs are the prefect choice for balls to use for practice. Our new Pro Comp microfiber cover offers the perfect combination of performance and durability. The composite microfiber material doesn't break down as easily as a traditional leather cover allowing the ball to perform at a high level for longer. Additionally, we meticulously engineered this new cover to hold up under all conditions so it won't lose grip in wet weather. These practice balls feature raised seams and a cushioned cork center giving you the best performing practice balls you'll find. Get yours today!