Pimpernel Victorian Christmas Coasters - Set of 6 Go to amazon.com Related posts Top recommendation for christmas coasters set FeatureSize: 4.25" SquareHardboard, Cork backedDurable, heat sealed surfaceGift PackedHeat resistant to 225F DescriptionAttractive hardboard coasters by Pimpernel with heat sealed edges and cork backing. Wipe clean with a damp cloth.