Watermelon Ball Needle Kit, Beach Summer Party,Pack of 6, 6.2 Inch. Includes 6 pieces of Watermelon Bouncing Balls. Balls Measure 16 CM/6.2 Inch. EASY to USE and READY for FUN. A Good Parent-Child interaction toy. Perfect Gift for Graduations, Pool Parties, Beach Trips, Lakes, Birthday Parties, Barbeques, Graduations, Picnics, nearly ANY OCCASION!. The pump color is random.