This double-sided rectangle patio umbrella is constructed with durable 12-alloy steel ribs and a powder-coated frame. Its reinforced 5 plus 2 plus 5 steel frame design delivers exceptional structural support, effectively preventing sagging, ensuring long-term durability in all weather conditions. This patio umbrella comes with a heavy-duty cross base, a protective base cover, two sandbags (sand not included), each with 60-70 lbs. of sand for optimum stability. This comprehensive weight system ensures the umbrella will stand firm even in inclement weather. This large market table umbrella features a smooth crank mechanism for effortless opening and closing with simple rotation, coupled with a push-button tilt system that allows quick shade angle adjustment to ensure all-day comfort, an ideal choice for outdoor spaces. This patio umbrella offers exceptional UV protection and water-proof properties with premium polyester fabric. The umbrella surface is not easy to fade and can be easily cleaned after rainfall, it maintains vibrant hues through extended outdoor use. Designed for premium outdoor comfort, this 15 ft. large rectangle outdoor umbrella delivers expansive shade coverage for your whole family. An ideal place for for social gatherings, lawn picnics , and seaside leisure on hot summer days.