Peggy Karr Handcrafted Art Glass Metro Coasters, Set of 4, 4-Inch Set of four hand-crafted art glass beverage coasters, each approximately 4-inch square; decorative, functional, and collectible Colored enamel pigments hand-applied and fused between layers of recycled glass; each piece has a unique character of surface texture and bubbles Metro pattern - retro-modern grid of dots and squares in a neutral pallet; also available in a wide range of other patterns 100-Percent non-toxic and food-safe; dishwasher safe for easy clean-up Handmade in the USA