This coaster features stoneware material that continually absorbs
  moisture to protect fine furniture. All coasters have a durable cork backing to protect furniture
  from scratches. 
 Sold in singles allowing a mix & match combination.  
 Details include:
 
 Size: 4" dia.
 Sold individually
 
 Aborbent Stoneware
 Natural Cork Back
 
 MADE IN USA!