【Outdoor Patio Umbrella Cover】This waterproof offset umbrella cover fits large garden cantilever/offset umbrellas up to 9 feet to 12 feet in diameter. Please measure the diameter of the sunshade before purchasing.【Heavy Duty Waterproof】The outdoor patio umbrella cover is made of 420D waterproof Oxford fabric with Silver coated inside to prevent breakage; with waterproof tape sealing on the seams inside the cover and waterproof zipper, the patio umbrella cover is sturdy and durable to protect your patio umbrella from sun, rain, snow, wind, dust and dirt.【Effective Protection】This patio umbrella covers for outdoor umbrellas vents at the top of the patio umbrella cover reduce wind blowing, prevent condensation and keep your outdoor parasol dry.【Windproof Design】This patio umbrella cover 9 ft To 12ft,strap with Industrial Strength Velcro in the middle of the umbrella cover, allows adjustment for a tight and easier fit. Elastic hem cord with separated and adjustable toggle for a tight custom fit, especially during high winds and severe weather.【Easy To Use】Each patio umbrella covers waterproof comes with an upgraded Telescopic hook Rod, which can be used in conjunction with the enlarged zip loop closure to efficiently and conveniently lift the cover up and down. The zip closure makes it easy to put on and take off; the retractable hook pole is convenient to hang inside the patio umbrella cover after use.