3dRose cst_112957_1 Colorful Bookshelf Books Rainbow Bookshelves Reading Book Geek Library nerd Librarian author 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