Fiberglass frame WINDPROOF 8-RIB CONSTRUCTION: Anntrue umbrella is designed with 8 resin-reinforced fiberglass ribs that flex slightly to withstand powerful gusts. The canopy is designed to invert itself and bounce back to its original shape when meeting heavy winds. AUTOMATIC OPEN / CLOSE: With one-handed press of a button. the Anntrue umbrella will be automatically OPEN / CLOSE in a second. You do not have to struggle with the closing your umbrella when getting into a car. building or tent. Now with this umbrella. No more waiting for your umbrella to open or close while you get soaked by the rain! PORTABLE AND LIGHTWEIGHT: Now you dont need to choose between big umbrellas and tiny umbrellas that can not supply practical wind protection. Measuring just 11.6" long and weighing less than 1lb. the folding automatic umbrella is extremely packable in purses. briefcases. backpacks. luggage and more.This is the best partner for travelling! QUALITY MATERIALS: Anntrue umbrella is coated with Superior Teflon which can repel water and dry much faster than our competitor. The frame is designed with a three-fold chrome plated black metal shaft which allows for greater stability and durability in strong wind.