PME Impression Mat - Snowflake This Snowflake design impression mat is the perfect way to enhance your cake design on any celebration cake! Can be used to create embossed or raised designs. To use: Knead and roll out your chosen paste to an even thickness. Choose the design side and put mat onto paste. Firmly use a smoother evenly across the mat to emboss the design into the paste. Remove the mat and design will have embossed onto the paste. Dimensions: 305mm (L) x 150mm (W)