Fervent Polyester 16 Ribs for Super-Strength Storm Protector Straight UmbrellaA stylish and durable companion for all the rainy daysRainbow umbrellas will keep you dry under the most intense downpours.With a strong sturdy aluminum alloy rod and 16 aluminum fiberglass ribs,you can never fear it collapses or flip inside out.Strong and Comfortable! Never fear the wind again! Our durable frame is designed to be rainproof and windproof – no flipping inside out.