Why choose the Patio Kingdom 3-Tier Fiberglass Umbrella? Is it truly windproof? Yes. Most umbrellas fail because wind pressure gets trapped under the canopy. Our 3-tier design acts like a series of vents, letting wind escape while keeping the shade in place. Combined with flexible fiberglass ribs that absorb wind energy, it is built for durability. Does it fit standard tables? Absolutely. The 1.5-inch diameter pole is compatible with almost all standard patio table umbrella holes. It’s the perfect centerpiece for your 48" to 54" outdoor dining set. Product Specifications: Canopy Size: 10 Feet Diameter Structure: 3-Tier Vented Top; 8 Fiberglass Ribs Mechanism: Crank Lift & Push-Button Tilt Fabric: UPF 50+ Solution-Dyed Polyester Base Note: Base is not included. We recommend a 50lb+ base for optimal stability.