BOSU Ballast Ball stays put, so that balls don't wander around the gym floor. Constructed of high-quality, burst-resistant material, it has a six-sided design for proper alignment and positioning. With the BOSU Ballast Ball, individuals can perform exercise progressions and dynamic drills that aren't possible on a regular stability ball. Not only can you improve your overall fitness, but also your core strength and balance. It's super easy to use no matter your fitness level. With the ability to accommodate any fitness level and a large variety of fun exercises, the Ballast Ball is definitely a keeper. The product is translucent light blue with white multi-dimensional material, and includes a foot pump and workout DVD. Product can be inflated between 55cm and 65 cm, 6.5 lbs. Maximum user weight is 300 lbs. Made in the USA.