This safe, high-quality exercise ball is an excellent tool for flexibility and strength training, as well as for use by expectant mothers as a relaxing chair or support for many positions during labor. Made from durable materials and not made with natural rubber latex, the ball will deflate slowly if punctured, providing greater safety. Ideal for adults 5'4" to 5'11". Additional ball sizes—21" (Item #85518) and 29½" (Item #85597)—are also available.