Sliverylake 8ft Outdoor Patio Umbrella Aluminum 6 Sturdy Ribs Market Table Umbrella with Push Button Tilt and Crank (Burgundy) 1.Material100% polyester fabric with vent that can block up to 90% of harmful UV rays 2.Strong Frame:1.5 inch (38mm) pipe-diameter and powder coated, 6 steel ribs keep the umbrella more stable 3.Crank and Tilt:Tilt with push button for more angles choice when shading, simple crank handle style for easy opening and closing. 4.ServiceBest customer any problems contact us firstly with 1 year warranty. 5.Note: Please Fold And Fasten The Umbrella Or Take It Down In Blustery And Thunderstorm Day To Protect The Umbrella