Exercise ball Exercise ball An exercise ball, also known as a Swiss Ball, is a ball constructed of soft elastic with a diameter of approximately 35 to 85 centimeters (14 to 34 inches) and filled with air. The air pressure is changed by removing a valve stem and either filling with air or letting the ball deflate. It is most often used in physical therapy, athletic training and exercise. It can also be used for weight training. The ball, while often referred to as a Swiss ball, is also known by a number of different names, including balance ball, birth ball, body
Bandy ball Bandy ball A bandy ball is a rubber ball used for playing bandy. The core of the ball is made of cork and this is surrounded by rubber or rubber-like plastic. The ball should be manufactured in a diameter of 62.4 mm or 63.8 mm (the latter is called "Russian ball") and the colour was originally red, later orange or cerise. According to the Bandy Playing Rules set up by the Federation of International Bandy, any of these is allowed, but all balls used in one game must be of the same colour and type. Bandy balls are manufactured by