Care Instructions Care Info: You've put a lot of care into choosing your furnishings. And with continued care at home, they should share your address for many years to come. Now for your owner's manual… 10' Round Sunbrella® Stone Free-Arm Umbrella with Base Expansion and contraction will occur with changes in humidity. Do not use abrasive cleaner. Outdoor fabric is mold, mildew, fade and rot 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.