A set of glasses and coasters that engage with each other by their concave and convex shapes. The coaster absorbs drops of water from the condensation on the glass. The coaster also has excellent deodorant and antibacterial properties, and the protrusion on the bottom of the glass creates convection when the drink is poured, bringing the air in to enhance the aroma of the drink and balance the taste. There is no need to mix with a muddler, and the beer foams better.
