The KAP7 Size 5 Water Polo Ball has quickly become the go-to choice for amateur and elite water polo players alike. KAP7 has tapped into years of experience, proprietary technology, and the highest quality materials. It is the best and longest lasting ball in the world. The offical ball of USA water polo, NCAA, LEN, and High school water polo. Proceeds from Ghana ball go directly to growing the sport in Ghana.