A break from the standard wooden coaster, a bamboo coaster speaks volumes to the natural, sustainable values the brand engraved on it promotes. Bamboo is often mistaken for a tree, but, is in fact a grass. That gives it a unique grain that is both elegant and natural looking. It is also naturally anti-microbial, containing bamboo kun, an agent that it produces to protect itself from harmful microbes and fungi. These gorgeous round coasters also include rubber feet to protect all fine surfaces from scratches. As a natural product, tone variations may occur. Laser logos will vary in color due to being lasered on a natural plant. Hand washing is recommended.