3dRose Janna Salak Designs White and Black Polka Dot Print Coaster, Soft, Set of 4 Dimensions: 3-1/2-inch h by 3-1/2-inch w by 1/4-inch d Made of recycled rubber Comes in a set of 4-same image on all coasters Washable-to prevent image from fading clean with mild detergent using cool water Absorbs moisture