Each square coaster is made with a high-gloss, polyester-coated hardboard top, and features a genuine cork bottom to prevent sliding.  .: High-gloss MDF top.: Cork back to prevent sliding.: 0.16" (0.4cm) thick.: 4-piece set.: One size: 3.75" × 3.75" (9.50cm x 9.50cm)

Each square coaster is made with a high-gloss, polyester-coated hardboard top, and features a genuine cork bottom to prevent sliding.  .: High-gloss MDF top.: Cork back to prevent sliding.: 0.16" (0.4cm) thick.: 4-piece set.: One size: 3.75" × 3.75" (9.50cm x 9.50cm)