This 75cm Ultimate Premium Swiss Ball is an integral part of Core Performance training. Great for developing and maintaining core stability muscles; this ball is rated as capable of holding up to 600lbs. The Premium Core Stability Ball is made of a durable and easy to clean material and comes with a training DVD led by certified personal trainer, Lynda Leene, a foot pump and ball plugs. The DVD will educate you on the benefits and demonstrate the many exercises for this piece of fitness equipment.