Milky Way Lighthouse Soap Mold Tray - Melt and Pour - Cold Process - Clear PVC - Not Silicone - MW 245 Dimensions: 4" x 2.75" x 1.25" 3 cavities. Material: Clear PVC (Not Approved for Food Contact) Care: Wash in warm, sudsy water. Please avoid the dishwasher because that can warp your molds or make them brittle. Maximum Product Pour Temp: 145F. If you pour at a hotter temperature, your mold will likely warp.