The 4-piece unpainted Square Wood Coaster set from Plaid is ideal for all types of creative projects—painting, decoupage, stenciling, mixed media, and more. The high quality, lightweight wood features a smooth finish, ensuring great performance with any of our acrylic paints, Mod Podge decoupage finishes, stains and painted finishes, wood-burning, or a combination of techniques. 29564E Square Coasters - Measures approximately 4" x 4" (10. 16 cm x 10. 16cm).