1)stress ball made of PU 2)Pantone color system 3)Logo imprinting available 4)Nontoxic,environmental,Suit to EN71&CE&ASTM 1)stress ball made of PU 2)Pantone color system 3)Logo imprinting available 4)Nontoxic,environmental,Suit to EN71&CE&ASTM foam ball,pu foam ball: material : Polyurethanefoam size:4.0cm,5.0cm,5.5cm,6.3cm,7.0cm,9.0cmtest: EN71 part one & three,ASTMcolor:red,blue,or per ...