There's no environment too harsh for the California Umbrella 7.5 ft. Complete Fiberglass Sunbrella Patio Umbrella. Commercial grade. Not only are the 8 sturdy ribs maked of ultra-strong, ultra-flexible fiberglass, but the pole is as well. Entirely constructed of highly durable fiberglass, this is the most weather-resistant frame on the market. A solid resin hub works to connect the pole and ribs. Suitable for use with many table styles, the bottom portion of the pole is adjustable for bar height and standard height use. The pole measures 1.5-inches diameter so it accommodates the umbrella holes of most patio tables. A 7.5-foot diameter canopy is perfect for use with bistro tables and small cafe tables. Choose from 3 grades of Sunbrella fabrics. Sunbrella fabrics have a 5 year manufacturer warranty against fade, rot, and mildew.