The speedball is a great tool for hand to eye co-ordination which plays a key role in boxing. The speedball is also commonly used to remove stiffness in muscles. The speedball is stitched double from both inside and outside to prevent the ball from bursting due to any pressure. The speedball is best used with a speedball frame to use the proper rhythm. Key Features Material: Leatherette Zipper for easily replacement of bladder New style loop for longer lasting 10′ speedball Industrial grade bladder Optimal performance is achieved within an air pressure range of 40-45 kPa.
