Dark Emperador Brown marble is a natural material: each Upside table is carved from a unique stone, so colour and veining will vary. Clean only with a soft microfibre cloth or a non-abrasive sponge, using glass cleaner or warm water with a mild detergent. Rinse with clean water, then wipe and dry thoroughly; blot spills promptly. Never use solvents, abrasives or kitchen cleaners, and never place hot items directly on the marble—use coasters at all times. Apply a marble sealant once or twice a year to help prevent staining. Marble and painted steel tables are for indoor use only, not outdoor.