With each order you get 4x coasters that come in 1x size, are made with a high-gloss top and feature a cork back 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" (9.5cm x 9.5cm)