... certificate 3.Customzied design is welcome. change color shape rubber bands 1.silicone material 2.Passed CE,LFGB,SGS,FDA certificate 3 ... bands details1.100% silicone material,softness,good resistance.2.NON-toxic,inviromental friendly material,meet with CE,LFGB,SGS,FDA ... certifciates.3.Various design and color are available,OEM shape is acceptable4.Usage ...