With You6688 Umbrellas Waterproof, Windproof, Anti UV, UPF&gt;40 UVA&lt;5% - Large Size, Radian 128CM, Umbrella Diameter 113CM - Triple Folding Umbrella - Retail Packing Polyester fiber cover with high density and water repellency No malfunction detected after 10000 times usages Resistant to erosion with rust-proof procedure Resistant to strong wind, sturdily durable High quality stell structure