Structure: Alum. standing pole 38/38*1.0mm, 8 steel ribs 12*18mm, crank to open, keep cranking and the umbrella tilt automatically. Tilt material: zinc die-cast. Color: Green Beige Red Black LARGE SHADING AREA: 9 feet octangole Fabric: 180g solution-dyed polyester, water repellence, UV30+, color fastness 500H, grade 5-6. Single air vent Base is not included. NOTE:Lighting, contrast and color display may cause color difference.