Bamboo coaster Color : Carbonized/Red/Green/Yellow/Natural, 100% made of bamboo with smooth surface. Bamboo coaster Color : Carbonized/Red/Green/Yellow/Natural, Carbonized/Vertical Size: 99*99*6mm,DIA.114*70mmMade by quality Bamboo and with very smooth surface,they can be designed to of your convenience. Bamboo coaster