3dRose cst_107310_1 Find X Here it is, Math Humor, School Humor, Funny, Geometry, Algebra-Soft Coasters, Set of 4 Dimensions (in Inch): 3.5 H x 3.5 W x 1/4 D 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 Made of recycled rubber