Robust and beautiful, these coasters are made from 100% natural slate. Great for stopping spills and stains. The coasters will look great when paired with the natural slate and heart-shaped placemats. Phone holders, serving trays, placemats and other homeware are also available in this collection. Measurements: 10 x 10 cm (4" x 4"). Heat resistant to 90C (194F). Ideal as a gift for a nature loving friend. Creative Tops Naturals Pack Of 4 Slate Coasters in Black