This is a medium sized speed ball which is made from Vinyl. It is lined with 2 layers of textile materials to give it extra strength. The ball is hand stitched and is made from 6 long panels and one end panel. The ball has a rubber bladder inside which is inflated with a standard football pump to give shape the the ball. The ball also comes with a swivel which attaches to the ball and allows the ball to swing. The swivel can be attached to any suitable surface or brackets sets can be purchased from our shop. The product is made to the highest specification and is quality tested and guaranteed. This has made it the choice of professionals and that is the reason we are supplying these to world class health clubs, gyms, Boxing clubs users.