The large, double-layered canopy design creates a vent during where wind can pass through, and the precise vent size design will protect you from anything nature throws at you.The top is made of super water-resistant, anti-slump and light high-tech fabrics. The whole frame is made of glass fibre, perfectly matching the double roof ensure that your umbrella is VIRTUALLY WINDPROOF! High quality EVA grip further improves grip comfort and control ability. This is the best choice for perfectionists.