The Big Red Base can be used with the long or short poles to create temporary and portable playing areas for wide range of sports. It can be filled with water or sand through a convenient top opening. We recommend filling with wet sand for maximum stability.Screw cap.Yellow insert included.Max filled weight: 38kg approx.Diameter: 50cm. Height:18cm.Equipment should be assembled by an adult and used under supervision.Poles and nets sold separately.