The RainWorthy vented windproof fiberglass umbrella is made to withstand the heaviest of winds. The umbrella features a strong, but lightweight fiberglass construction. Case of: 24. Manufacturer: RainWorthy. Retail Packaged: Bulk. UPC Coded: Yes. Materials: Polyester and fiberglass. Dimensions: 39 1/2 inches L x 60 inch Arc. How packaged: 24 umbrellas per case.