Double-Sided Design Offers Ultra-Large Shade: This 15ft twin patio umbrella with air-vented design offers a large shading coverage, protecting you from harmful sunny lights & allowing you to enjoy breeze. Made of fade-resistant and sun-protective fabric, the umbrella is durable for outdoor long-term use. Sturdy Metal Structure with Superior Strength: Specially crafted 12-rib structure perfectly supports canopy. Made of sturdy metal, it offers high durability and excellent sturdiness. The smooth metal surface will prevent the umbrella from rust and corrosion, so as to ensure the umbrella long service life. Easy-to-Operate Hand Crank Technology: Equipped with efficient hand-crank technology, the umbrella is easy and smooth to open and close in a few seconds. And the folding umbrella can be fixated orderly with the extra strap, providing you with a tidy place. Extra Stable Umbrella Base Included: This large sun umbrella comes with a sturdy and durable umbrella base bracket, so you don't need to buy it separately. The weighted base consists of a metal frame and 2 sandbags (no sand). And each sandbag can be filled with 90 pounds of sand to improve the stability of the twin umbrella. Also, the assembly is easy to finish following the instruction. Wide Application in All Occasions: Whether for residential use or in commercial occasions, this outside umbrella is an eye-catching addition to your patio, garden, café store and outdoor market. More than offering comfortable relaxation places, the patio umbrella will be an ideal decoration to add attractiveness.