• BOSU Ballast Ball has 2.5 pounds of movable weight inside that engages and targets more core and stabilizer muscles during exercises and creates more intense and efficient workouts. Overall ball weight is approximately 5 pounds..
• The 45cm BOSU Ballast Ball is identical to the 65 cm but smaller in size and is ideal for smaller spaces, smaller adults or adults that want a slightly smaller ball weight. Maximum user weight is 250 pounds for the 45 cm ball..
• Constructed of thick, high-quality, burst-resistant material that features a six-sided surface design for proper alignment and positioning to get the most out of each workout. Weight inside keeps the ball from rolling during workouts for added safety..
• Package includes BOSU Ballast Ball, pump, measuring tape, owner’s manual and workout DVD. The included DVD shows effective and unique ways to use the Ballast Ball. Proudly made in the USA..
• Extra Firm Design.

Introducing the 45cm BOSU Ballast Ball. The new, smaller size can be used to perform the same exercises that can be done using the 65 cm BOSU Ballast Ball but in a smaller size and a slighter smaller overall weight. Makes a great addition to any home gym. The smaller size is also a good option for smaller adults. What makes the BOSU Ballast Ball different than other stability balls is the 2.5 pounds of movable weight inside (sand like) that helps to engage and target more muscles during all exercises and creates more intense and efficient workouts. The weight inside also prevents the ball from rolling and provides visual and audible feedback when lifting, shaking and shifting the ball. The added weight inside is immediately noticeable and the increased workload is felt with any lifting or passing of the ball. Incorporate the BOSU Ballast Ball into many standard body weight exercises like pushups, crunches, planks or hip bridges or use for deeper back, hip or ab stretches. The six-sided imprinted surface helps ensure proper alignment and positioning when performing exercises. The BOSU Ballast Ball is constructed of thick, high-quality, burst-resistant material for safety during workouts and ensures greater durability. Overall weight of the ball is approximately 5 pounds. For best inflation results fill ball to 90% and allow ball to sit overnight or for several hours. After allowing the ball to rest after the initial inflation, inflate again. The second inflation will fill ball to final size. Maximum user weight limit is 250 pounds. Package includes BOSU Ballast Ball, pump, owner’s manual, tape measure and workout DVD. The included DVD shows effective and unique ways to use the Ballast Ball to work upper and lower body and the core. Phthalate and latex free. Proudly made in the USA.