... 3 Heat insulation 4 Customized Square slate coaster with EVA pads:1, Color:black,green,grey,rusty2, Packing: carton with ... box ,* as customers' requirement .3, Back pads: ** Black EVA pads Dia1.5cm , 3mm / 5mm thickness ** Black felt pads , Dia1.5cm / 3cm , 3mm/5mm ... thickness. ** White silicone pads , Dia 1.5cm , 3mm thickness.4, ...