... 1.material:foam rubber 2.manufactory,billiards ball 3.certificate:SGS,EN71 billiards ball specification RUBBER FOAM BALLMaterialnatural rubberSize28MM ... ball,circle,missile ball,return ball,doggy play ball,billiards ballApplicationSports ball, Decoration,Promotion gift,Rubber Toy Ball ... of solid foaming ball.Natural rubber vulcanization chemical method by combining physical shape after foam.The ball's ...