The placemats by Philippi are made of waxed wood. Almost as thin as paper, yet very sturdy, this waxed set of placemats is made from 2 layers of oak veneer which has a pleasant, smooth surface and can be kept clean easy. They are heat resistant but not heat safe - so ok for a warmed plate but not a dish of food straight from the oven.
To clean: wipe with a damp cloth (do not put in dishwasher or immerse in water).