... shell colorShaperectangle,Square , irregular,3d wave shape,round,ball,hexagon,octagon.etc.Featuresenvironmental , no harm to bodyno radiation ... environmental ,no radiation, no pollution ,no harm to body5) low water absorption, high waterproof6) Backing: Mesh, Ceramic, Porcelain, Marble, ... film, foam and pallet Outer package: carton Freshe water shell mosaic, natural white and dyed brown mixed checker ...