Champion Sports Official League Baseball with Raised Seams for Better Grip and Durable LeatherImprove your practice with this Champion Sports Official League Baseball. This durable option boasts a premium leather cover that can withstand the wear and tear of everyday use. The core is crafted with a rubber and cork combination, offering a solid feel for drills and practice games at a great value. The 3 ply gray wool yarn winding ensures the ball maintains its shape after every hit, while the raised seams add a classic touch and enhance grip