InterestPrint Stylish Polka Dot Black White Foldable Umbrella 43" Arc Material: 100% polyester pongee waterproof fabric and aluminium. Detials: 8 ribs made from strong fiber for extra support Gripped plastic handle for firm hold Each rib sized in 21.7 inch and consists of 3 section aluminium for flexibility and strength Using heat sublimation technique to prevent discoloring, long-lasting effects