The BMS Compressed Coaster.
These new compressed fibre coasters are similar in feel to beer mats but are not made of cardboard. The are actually manufactured from a material called Subli-Fabric Board, often abbreviated to SFB. SFB is a great deal more durable than standard cardboard and is seriously long lasting in comparison.
These new lightweight coasters are printable on both sides and come in two different shapes, 100mm square and 100mm round versions.
Great, light weight, vibrant prints with a matte finish and at a very reasonable cost per unit. Placemats also available in the same material which can be printed both sides.