Milky Way Celtic Clover Soap Mold Tray - Melt and Pour - Cold Process - Clear PVC - Not Silicone - MW 64 Dimensions: 2.75 x 2.75 x 1 The use of knots in Celtic art highlights the Celts belief in the interconnectedness of life and eternity. Combined with traditional shamrocks, the Celtic Clover Soap Mold adds a touch of the Irish to your handmade soap. 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.