Solid wood: Natural wooden textured, diameter 4 inches, not easy to crack and deform, durable and long-lasting which keep your table dry and protect your furniture, Best choice for everyday family use Wide Occasion: Natural black walnut wood, equipped with a metal bracket to store coasters and save space, which won't scratch your tables and other surfaces, can be used for hot and cold drinks, great for homes, bars, and restaurants Attention please: Due to the use of pure natural walnut material, every coaster has its unique wood grain and color that has natural deviations with not deliberately selection Easy to clean: Just clean them with a damp cloth and wipe with clean dry cloth now; due to the nature of purely natural wood, it is not recommended to use the dishwasher to clean Note: Now available in rounded and straight edge styles, shipped randomly. Thank you.