The actual set you get may slightly vary in color from what you see on your screen due to your screen and printer settings.
Cork-Back Coaster
Top layer is hardboard MDF (medium-density fibreboard)
Size is 3.74"x3.74" x 0.12" (9.5 cm x 9.5 cm x 0.3mm)
Rounded corners
Water-repellent, heat-resistant, and non-slip
Easy to clean