The Columbia 300 Dynamic Swing 15 lb Bowling Ball with ERT-Hybrid coverstock is designed specifically for bowling enthusiasts looking for a high-quality, durable ball. Weighing 15 lbs, this ball provides the ideal weight for players to easily control and maneuver on the bowling lane. With its ERT-Hybrid coverstock, the ball offers a smooth and consistent finish for accurate and precise throws. Built by Columbia 300, a trusted brand in the bowling industry, this ball is perfect for players seeking a reliable and performance-driven option for their game.