material : soft ball with water inside . 1st time buy from this seller . cheaper price than the other seller . ball size is described on the picture . a bit slow arrive at my place ( sarawak ) . just want the seller to improve packaging with box or wrapped after this . thank you####[([3], [2], 'NEU'), ([3], [4, 5, 6], 'POS'), ([16], [15], 'POS'), ([23], [25, 26, 27, 28], 'POS'), ([33], [32], 'NEG')]