The Ravenna umbrella cover from Classic Accessories combines a striking style with durability, fade-resistance and convenient features. Zippered side makes covering and uncovering your umbrella easy. Double-stitched seams add strength and a stylish accent. Structured vents stay open to prevent wind lofting and mildew and are lined with mesh barriers. Waterproof backing keeps your umbrella dry while the elastic hem cord moves easily through a special channel for a snug fit. A custom-colored buckle will keep your cover secure in any weather. Striped webbing adds an attractive accent and is unique to the Ravenna collection. The Ravenna umbrella covers add style to your patio and will protect for years. 4-Year replacement warranty through manufacturer. Patent pending.