Sublimation Blanks 100 pieces of 3.5" Round Blank Fabric top Drink Coasters are ideal for dye Sublimation, heat transfer printing and silk screen printing. Coasters are undecorated. NWOT Made with bright white polyester material & 1/8" thick rubber backing. Round drink coasters with white, polyester fabric top for commercial quality sublimation results. 3.5" circle shape and 1/8" thick. Black rubber backing that is flexible and long lasting. Use them to Customize with photos or designs for unique Graduation, Baby Shower, Bridal Shower, Birthday, Family Reunion or Wedding Favors or Gifts!