Tropishade 11' Umbrella with Premium Green Olefin Cover 11 ft umbrella can create a large shade area with easy crank opening and closing Rust free powder coating bronze finish aluminum frame and reinforce resin runner Flexible 8 fiberglass ribs with extra strength and durability. No tilt for stability. 100% solution dye forest green fabrics with color fastness enhancement fade resistant. Umbrella pole diameter is 1.5" and it fit most of patio furniture and umbrella base Search " tropishade " for a compatible base ( Photo base sold separately, minimum weight 50 lbs base or more recommend ) Upgrade to Sunbrella, please search " tropishade sunbrella " for selection