These are MDF and they are about 2.75 inches in diameter. The other side is cork. They have a shiny finish. I recommend subbing These at 380 degrees for 50 seconds with super light pressure. This comes with 2 coasters.
Car Coasters Sublimation Blanks, Hobby Lobby
Car Coasters Sublimation
Collections – Kenzie's Corner Boutique
This is for 18 absorbent MATTE sublimation ceramic car coasters/sandstone car coasters. Price includes shipping cost. Absorbent MATTE ceramic car
18 Sandstone Absorbent Car Coasters (Free Shipping)
Sublimation blanks – Kenzie's Corner Boutique
Sublimation Blanks Cup Coasters, 6 Pieces Square MDF