YEARS OF RESEARCH AND DEVELOPMENT - After years of designing and testing brollies, we know everything it takes to make a great, durable, strong, weatherproof umbrella. There are four very important factors to be aware of. 1) Strong frame with fiberglass, 2) Strong enough to cover your canopy, 3) Automatic that allows one-handed operation and 4) You can count on excellent customer service even after our 30-day warranty. We'll explore these factors below.1) Sturdy Fiberglass Frame - Our unique umbrellas are sturdy because we only use high quality components and skilled technicians. Our UltraFlex frame technology gives you strength and flexibility. Our design allows the umbrella to flip over to regulate pressure even with gusts of up to 60 mph. Then our fiberglass ribs came back into place again and again. That's what "windproof" means; never settle for less. Every rib and stretcher has been carefully designed to give you reliability.2) A canopy strong enough to cover you - we only use high quality, waterproof fabrics that are strong, light and flexible so they work in harmony with the frame. When opened, the black canopy has a wide 51-inch arc and is 44 inches in diameter.3) Automatic Mechanism - This umbrella will open automatically so you can react to the downpour in seconds. The benefit of the automatic mechanism is that you can open the umbrella with only one hand, which is very important when every second counts, and you also have six shopping bags with you! When closed, the umbrella measures 37 inches from tip to handle.