Mildew resistant vent. Heavy duty water resistant, UV treated polyester.Fits oval or rectangular table with chairs up to 120" L x 86" WMeasure your patio set dimension after putting the chair close to your table or underneath the table, Make sure this patio cover fits your patio set. In some case you can move around the chair to make this cover perfect fits your patio set.Heavy duty vinyl with polyester backing.Can be used with or without umbrella. (hole is located in the center of the cover)Keeps table and chairs clean and dry.Velcro ties keep cover secure.Zipper runs from center to one end for ease of putting the cover on.Clean with a damp cloth.Size: 120"L x 86"W x 45"H rectangular shape