GZ5CG Diatomaceous Earth Coasters Set of 6, Absorbent Diatomite Coasters 4 Inch Round Grooved Ceramic with Holder, for Drink Coffee Cup Desk Minimalist Decor, Cork Backing Included (White, 6pcs)

["Absorbent Material: coasters are made of diatomaceous earth which is a porous material formed by sedimentation of seaweed plants, therefore it has strong adsorptivity and is a natural environmentally friendly material","Dimension: 4 inch * 4 inch * 0.3 inch","Furniture Protection: 6 pieces of non-slip adhesive cork backings are included; you may paste the corks underneath the coasters to avoid the coasters sliding or scratching your table","Maintenance: rinse with clean water and place in a ventilated area to restore absorbency","Package: ceramic coasters x 6pcs, holder x 1pc, cork backings x 6pcs; coasters are seperately wrapped with bubble bags for protection in transport"]