Champion Sports Fit Pro Training & Exercise Ball - Multiple Colors and Sizes THE YOU CAN ACCOMPLISH ANYTHING BALL: The only person that can get in your way to optimal health and a great physique is yourself. By including our multi-dynamic exercise ball into every workout, the only thing you need to bring is determination. PREMIUM CRAFTSMANSHIP: The Champion Sports balls are ISO 9001 certified and extensively tested using thorough certification processes. Made of italian resin material, these stability balls are comfortable yet tough and puncture-resistant. EFFECTIVE FOR CORE TRAINING: Whether you are aspiring for a six-pack, need to strengthen your stabilizing muscles and abdomen, or just improve balance and posture, using these balancing balls in your routine can significantly improve all the above. IDEAL FOR PAIN RELIEF: Great for functional strength training, our therapy ball can also be employed for post-op rehab, recovery, and physical or occupational therapy as a result of sports injury or chronic pain. Use it for stretching or massage. AN ACCESSORY FOR EVERY CLASS: Lightweight and portable, these multifunctional jumbo medicine balls add challenge to yoga, crossfit, pilates, and personal training sessions. Incorporating this workout equipment will guarantee quick, dramatic results.