The BOSU BALLAST® Ball 45 cm is a revolutionary fitness tool designed to elevate core stability and balance training. Its unique ballast design ensures stability, preventing it from rolling away during workouts, unlike traditional exercise balls. This makes it ideal for dynamic drills and exercise progressions. Featuring a six-sided surface, the Ballast® Ball ensures proper alignment and positioning, enhancing workout effectiveness. The 2.5 lbs. of multi-dimensional load provides a fun, visual effect and audible feedback during exercises, making workouts more engaging and interactive. Perfect for both beginners and advanced users, the BOSU BALLAST® Ball allows for a wide range of exercises that are not possible with regular exercise balls. Its innovative design and functionality make it a must-have for anyone looking to improve their fitness routine.