This personalized photo coaster helps you market yourself the right way or uplift any table with a custom touch. Each round and square coaster is made with a high-gloss, polyester-coated hardboard top, and features a genuine cork bottom to prevent sliding. .: Material: Genuine cork bottom finished with a glossy white top made of polyester-coated hardboard .: Size: 3.75″ x 3.75″ (Square) and 4″ x 4″ (Round) .: High-gloss top .: NB! One coaster per listing .: Assembled in the USA from globally sourced parts