Riverbyland Antislip Coasters Square Shape Pack of 6 Size: 9 cm , 4 " New coasters for new year! Coasters with container, full of artistical. Best as gifts. Material: PU leather, EUA bottom. Durable and skid resistance. Include: 6 coasters 1 container. Enough for family use. Heat resistant, wipe down with a wet cloth or sponge.