Care Instructions Care Info 6' Round Sunbrella ® Graphite High Dining Umbrella with Black Frame Expansion and contraction will occur with changes in humidity. Do not use abrasive cleaner. Outdoor fabric is mold, mildew and fade resistant. Spot clean with mild detergent and water. Cover or store indoors during the winter and/or extreme weather. We recommend using a soft brush to remove dirt and dust. Store covers indoors in a cool dry place when not in use. To prevent mildew during storage,fabric and furniture must be dry.