This SG Bouncer Cricket Ball is designed for club and school matches and has a core made of cork which is a standard. The ball isresistant to water and is wound with wool for better durability and lifespan. The outside of the ball is made of alum tanned leather which ensures a sturdy cover for the strong core which is naturally seasoned. More than three decades of manufacturing par excellence cricketing goods has made Sanspareils Greenlands the world’s go-to company for any serious cricketer. SG prides itself on a research and development team that comprises of world-class cricketers ensuring first-hand perspective on the exact needs of any player.