Redfrog Innovations has launched its latest product "The Zeplin" Our goal was to simply redesign the weighted round medicine ball and convert it into the shape of a rugby ball to improve game day performance through sport specific related drills. By adding extra weight (2,3 and 4Kg) to your everyday fundamental drills, you will receive a firmer grip and gain confidence in ball handling capabilities. Rugby players can use the Zeplin to increase hand speed, distance passing, hand eye coordination and general scrummage and training drills.