These modern stone coasters will absorb moisture and are heat resistant. A thin cork layer on bottom protects surfaces.
Care: Rinse spills to prevent staining. Stains: one part bleach to three parts water. Soak overnight. Rinse thoroughly and allow to air dry cork side up. Red wine and similar stains will prove difficult to treat on any light colored areas of absorbent stone. Not recommended for use with metal containers as these can scratch the surface.