Everything Yoga Round Dome Ball This unique piece of equipment has it all! Whether you are looking to tone up with a fun and easy cardio workout, strengthen your abs, or work on your balance, our great Yoga Dome Balls are perfect for you. Our Dome Balls come fully assembled and only need to be blown up (pump included). Choose the Dome Ball with straps to also give yourself an arm and upper body workout while you exercise. Dome Balls are perfect to be used for any fitness goal, such as strength training, cardio, core strengthening, or even flexibility.